(266 days)
No
The document describes image processing and a "locked sorting algorithm" for classification, but does not mention AI, ML, or deep learning. The description of performance studies and key metrics are typical for a traditional image analysis system, not one explicitly leveraging AI/ML.
No.
The device is an in vitro diagnostic (IVD) tool used for analyzing urine particles, which aids in diagnosis and monitoring, but does not directly provide therapy.
Yes
The device is described as a "fully automated urine particle analyzer for in vitro diagnostic use" and its intended use is for the "quantitative measurement of red blood cells (WBC) and squamous epithelial cells (SQEC), the semi-quantitative measurement of bacteria (BACT) and crystals (CRYS) and the qualitative measurement of white blood cell clumps (WBCC), non-squamous epithelial cells (NSE), hyaline casts (HYAL), non-hyaline casts (NHC), yeast (YST), mucus (MUCS) and sperm (SPRM) in urine samples," which are all diagnostic measurements.
No
The device description explicitly states it is a "fully automated urine particle analyzer" that uses "flow cell digital imaging technology" and captures images. This indicates the device includes hardware components for sample handling, imaging, and analysis, not just software.
Yes, this device is an IVD (In Vitro Diagnostic).
The "Intended Use / Indications for Use" section explicitly states: "AUTION EYE AI-4510 Urine Particle Analysis System is a fully automated urine particle analyzer for in vitro diagnostic use."
The "Device Description" section also reiterates this: "The AI-4510 System (AUTION EYE AI-4510) is a fully automated urine particle analyzer for in vitro diagnostic use that uses flow cell digital imaging technology in a clinical laboratory setting."
N/A
Intended Use / Indications for Use
AUTION EYE AI-4510 Urine Particle Analysis System is a fully automated urine particle analyzer for in vitro diagnostic use. AUTION EYE AI-4510 is intended for the quantitative measurement of red blood cells (WBC) and squamous epithelial cells (SQEC), the semi-quantitative measurement of bacteria (BACT) and crystals (CRYS) and the qualitative measurement of white blood cell clumps (WBCC), non-squamous epithelial cells (NSE), hyaline casts (HYAL), non-hyaline casts (NHC), yeast (YST), mucus (MUCS) and sperm (SPRM) in urine samples.
A trained operator can set criteria for flagging speciment analyte image decisions should be reviewed and reclassified as necessary by a trained technologist.
The AUTION EYE AI-4510 analyzer can be used as a standalone unit or combined with an AUTION MAX AX-4060 urine chemistry analyzer.
Product codes
LKM, KQO
Device Description
The AI-4510 System (AUTION EYE AI-4510) is a fully automated urine particle analyzer for in vitro diagnostic use that uses flow cell digital imaging technology in a clinical laboratory setting. Based on images captured in the flow method, the instrument automatically classifies the images of various formed elements. The AI-4510 System can quantitatively measure RBC, WBC, and SQEC; semi-quantitatively measure BACT, and CRYS; and qualitatively measure WBCC, NSE, HYAL, NHC, YST, MUCS and SPRM in urine samples. In addition, the AI-4510 System allows trained operators to manually review and reclassify all the element images collected by the system.
Mentions image processing
Yes
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Image capture and digital processing of images
Anatomical Site
Not Found
Indicated Patient Age Range
Not Found
Intended User / Care Setting
A trained technologist / clinical laboratory setting
Description of the training set, sample size, data source, and annotation protocol
Not Found
Description of the test set, sample size, data source, and annotation protocol
Not Found
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Precision:
- Repeatability Study: One (1) instrument, one (1) site, one (1) operator, 10 replicates, clinical urine samples. Results collected from low to high concentrations met predefined acceptance criteria.
- Within-Laboratory Precision Study: Conducted over twenty (20) days with two (2) runs per day and two (2) replicates per run using ARKRAY control materials prepared using clinical samples.
- Reproducibility Study: Conducted from three (3) sites, with one (1) analyzer per site, and testing conducted over five (5) days with two (2) runs per day and three (3) replicates per run using commercially available control materials and ARKRAY control materials prepared using clinical samples.
Linearity:
- Linearity testing was performed for the AI-4510 System using one instrument for RBC, WBC, and SQEC, following CLSI EP06-2" Edition. All met predefined acceptance criteria.
- Linear Range: RBC (5-1,000 RBC/μL), WBC (5-1,000 WBC/μL), SQEC (5-180 SQEC/μL).
Limit of Detection:
- LoB, LoD, and LoQ were conducted for RBC, WBC, SQEC, CRYS, BACT following CLSI-EP17-A2. All elements met predefined acceptance criteria.
- LoB, LoD, LoQ (cells/µL): RBC (0.0, 2.3, 2.3), WBC (0.0, 1.5, 1.5), SQEC (0.2, 1.6, 1.6), CRYS (0.0, 6.4, 6.4), BACT (0.0, 6.0, 6.0).
Carryover:
- Carryover testing confirmed no carryover contaminations for all twelve (12) elements. Testing used pre-prepared high-level and low-level samples measured alternatively.
Interference:
- Interference testing evaluated the influence of interfering substances on the measurement of twelve (12) particle elements. Dose dependency evaluation was performed for confirmed interferences to determine the highest concentration without observed interference.
Sample Stability:
- Sample stability was evaluated for twelve (12) elements on both positive and negative samples at room temperature (15-30°C) and under refrigeration (2-8°C).
- Results established sample stability at room temperature (15-30°C) for up to 2 hours and under refrigeration (2-8°C) for up to 6 hours for all elements.
Method Comparison:
- Study conducted at three (3) CLIA-Moderate complexity laboratories to evaluate agreement between the AI-4510 System, the iQ200 System (K093861), and manual microscopy.
- Sample Size: 377 for RBC (AI(M) vs. IQ(M)), 845 for WBC (AI(M) vs. IQ(M)), 382 for SQEC (AI(M) vs. IQ(M)).
- Quantitative, Semiquantitative, and Qualitative parameters met acceptance criteria.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Method Comparison (Semi-quantitative - BACT):
- N: 1474
- Sensitivity: 76.2% (72.9%, 79.3%)
- Specificity: 83.7% (81.0%, 86.1%)
Method Comparison (Semi-quantitative - CRYS):
- N: 1474
- PPA: 90.5% (85.1%, 94.1%)
- NPA: 98.2% (97.3%, 98.8%)
Method Comparison (Qualitative - NSE):
- N: 765
- PPA: 88.7% (77.4%, 94.7%)
- NPA: 84.3% (81.4%, 86.8%)
Method Comparison (Qualitative - NHC):
- N: 765
- PPA: 80.2% (71.6%, 86.7%)
- NPA: 83.8% (80.8%, 86.4%)
Method Comparison (Qualitative - HYAL):
- N: 765
- PPA: 85.0% (78.4%, 89.9%)
- NPA: 89.0% (86.3%, 91.2%)
Method Comparison (Qualitative - YST):
- N: 765
- PPA: 97.1% (85.1%, 99.5%)
- NPA: 99.6% (98.8%, 99.9%)
Method Comparison (Qualitative - WBCC):
- N: 1474
- PPA: 86.5% (80.5%, 90.8%)
- NPA: 89.3% (87.5%, 90.8%)
Method Comparison (Qualitative - MUCS):
- N: 1474
- PPA: 81.9% (76.3%, 86.5%)
- NPA: 88.0% (86.1%, 89.7%)
Method Comparison (Qualitative - SPRM):
- N: 1474
- PPA: 86.2% (75.1%, 92.8%)
- NPA: 99.6% (99.2%, 99.8%)
Predicate Device(s)
Reference Device(s)
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information
Not Found
§ 864.5200 Automated cell counter.
(a)
Identification. An automated cell counter is a fully-automated or semi-automated device used to count red blood cells, white blood cells, or blood platelets using a sample of the patient's peripheral blood (blood circulating in one of the body's extremities, such as the arm). These devices may also measure hemoglobin or hematocrit and may also calculate or measure one or more of the red cell indices (the erythrocyte mean corpuscular volume, the mean corpuscular hemoglobin, or the mean corpuscular hemoglobin concentration). These devices may use either an electronic particle counting method or an optical counting method.(b)
Classification. Class II (performance standards).
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Image /page/0/Picture/0 description: The image contains the logo of the U.S. Food and Drug Administration (FDA). The logo consists of two parts: the Department of Health & Human Services logo on the left and the FDA acronym along with the full name of the agency on the right. The FDA part of the logo is in blue, with the acronym in a square and the full name, "U.S. Food & Drug Administration," written out next to it.
May 3, 2024
Arkray Inc. % Daya Ranamukhaarachi VP/Science and Regulatory Affairs ARKRAY, Inc. 5198 West 76th Street Minneapolis, Minnesota 55439
Re: K232416
Trade/Device Name: AUTION EYE AI-4510 Urine Particle Analysis System Regulation Number: 21 CFR 864.5200 Regulation Name: Automated cell counter Regulatory Class: Class II Product Code: LKM Dated: April 5, 2024 Received: April 5, 2024
Dear Daya Ranamukhaarachi:
We have reviewed your section 510(k) premarket notification of intent to market the device referenced above and have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate commerce prior to May 28, 1976, the enactment date of the Medical Device Amendments, or to devices that have been reclassified in accordance with the provisions of the Federal Food, Drug, and Cosmetic Act (the Act) that do not require approval of a premarket approval application (PMA). You may, therefore, market the device, subject to the general controls provisions of the Act. Although this letter refers to your product as a device, please be aware that some cleared products may instead be combination products. The 510(k) Premarket Notification Database available at https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpmn/pmn.cfm identifies combination product submissions. The general controls provisions of the Act include requirements for annual registration, listing of devices, good manufacturing practice, labeling, and prohibitions against misbranding and adulteration. Please note: CDRH does not evaluate information related to contract liability warranties. We remind you, however, that device labeling must be truthful and not misleading.
If your device is classified (see above) into either class II (Special Controls) or class III (PMA), it may be subject to additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 898. In addition, FDA may publish further announcements concerning your device in the Federal Register.
1
Additional information about changes that may require a new premarket notification are provided in the FDA guidance documents entitled "Deciding When to Submit a 510(k) for a Change to an Existing Device" (https://www.fda.gov/media/99812/download) and "Deciding When to Submit a 510(k) for a Software Change to an Existing Device" (https://www.fda.gov/media/99785/download).
Your device is also subject to, among other requirements, the Quality System (QS) regulation (21 CFR Part 820), which includes, but is not limited to, 21 CFR 820.30. Design controls; 21 CFR 820.90. Nonconforming product; and 21 CFR 820.100, Corrective and preventive action. Please note that regardless of whether a change requires premarket review, the QS regulation requires device manufacturers to review and approve changes to device design and production (21 CFR 820.30 and 21 CFR 820.70) and document changes and approvals in the device master record (21 CFR 820.181).
Please be advised that FDA's issuance of a substantial equivalence determination does not mean that FDA has made a determination that your device complies with other requirements of the Act or any Federal statutes and regulations administered by other Federal agencies. You must comply with all the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801 and Part 809); medical device reporting of medical device-related adverse events) (21 CFR Part 803) for devices or postmarketing safety reporting (21 CFR Part 4, Subpart B) for combination products (see https://www.fda.gov/combination-products/guidance-regulatory-information/postmarketing-safetyreporting-combination-products); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820) for devices or current good manufacturing practices (21 CFR Part 4, Subpart A) for combination products; and, if applicable, the electronic product radiation control provisions (Sections 531-542 of the Act); 21 CFR Parts 1000-1050.
Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). For questions regarding the reporting of adverse events under the MDR regulation (21 CFR Part 803), please go to https://www.fda.gov/medical-device-safety/medical-device-reportingmdr-how-report-medical-device-problems.
For comprehensive regulatory information about mediation-emitting products, including information about labeling regulations, please see Device Advice (https://www.fda.gov/medicaldevices/device-advice-comprehensive-regulatory-assistance) and CDRH Learn (https://www.fda.gov/training-and-continuing-education/cdrh-learn). Additionally, you may contact the Division of Industry and Consumer Education (DICE) to ask a question about a specific regulatory topic. See the DICE website (https://www.fda.gov/medical-device-advice-comprehensive-regulatoryassistance/contact-us-division-industry-and-consumer-education-dice) for more information or contact DICE by email (DICE@fda.hhs.gov) or phone (1-800-638-2041 or 301-796-7100).
Sincerely,
Min Wu-S
Min Wu Branch Chief Division of Immunology and Hematology Devices OHT7: Office of In Vitro Diagnostics
2
Office of Product Evaluation and Quality Center for Devices and Radiological Health
Enclosure
3
Indications for Use
510(k) Number (if known) K232416
Device Name
AUTION EYE AI-4510 Urine Particle Analysis System
Indications for Use (Describe)
AUTION EYE AI-4510 Urine Particle Analysis System is a fully automated urine particle analyzer for in vitro diagnostic use. AUTION EYE AI-4510 is intended for the quantitative measurement of red blood cells (WBC) and squamous epithelial cells (SQEC), the semi-quantitative measurement of bacteria (BACT) and crystals (CRYS) and the qualitative measurement of white blood cell clumps (WBCC), non-squamous epithelial cells (NSE), hyaline casts (HYAL), non-hyaline casts (NHC), yeast (YST), mucus (MUCS) and sperm (SPRM) in urine samples.
A trained operator can set criteria for flagging speciment analyte image decisions should be reviewed and reclassified as necessary by a trained technologist.
The AUTION EYE AI-4510 analyzer can be used as a standalone unit or combined with an AUTION MAX AX-4060 urine chemistry analyzer.
Type of Use (Select one or both, as applicable) | |
---|---|
Prescription Use (Part 21 CFR 801 Subpart D) | Over-The-Counter Use (21 CFR 801 Subpart C) |
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510(k) Summary
This 510(k) Summary of the AUTION EYE AI-4510 Urine Particle Analysis System is submitted in compliance with 21 CFR807.92 for the purposes of safety and effectiveness.
Date Prepared: | April 03, 2024 | |
---|---|---|
Establishment: | ARKRAY Factory Inc. | |
1480 Koji, Konan-cho, | ||
Koka-shi | ||
Shiga Japan, 520-3306 | ||
Submitter: | ARKRAY Inc. | |
Yousuien-nai, 59 Gansuin-cho, | ||
Kamigyo-ku | ||
Kyoto Japan, 602-0008 | ||
Official US Agent: | Daya Ranamukhaarachchi, PhD | |
ARKRAY Factory USA Inc. | ||
Title: VP/Science and Regulatory Affairs | ||
Phone (408) 234-0804 | ||
Email: ranamukd@arkrayusa.com | ||
Primary Contact: | Ryan Hanson | |
ARKRAY Factory USA Inc. | ||
Title: Science Affairs Manager | ||
Phone (952) 646-3121 | ||
Email: hansonr@arkrayusa.com | ||
Secondary Contact: | Marissa Brooks | |
ARKRAY Factory USA Inc. | ||
Title: Regulatory Affairs Project Manager | ||
Phone (760) 525-8405 | ||
Email: brooksm@arkrayusa.com |
Device Name:
Trade Name: AUTION EYE AI-4510 Urine Particle Analysis System
Common Name: Automated cell counter (Urine particle counter)
5
Predicate Device:
Trade Name: | iQ200 Urine Analyzer (K093861) |
---|---|
Common Name: | Automated Urinalysis System |
5.1 Regulatory Information:
Regulatory Classification for Automated cell counter (Urine particle counter) and each of the tests are listed in Table 1.
Table 1. Regulatory Classification for the AI-4510 System
| Test
Description | Product Code | Device Class | Regulation | Device Panel |
---|---|---|---|---|
Urine Particle | ||||
Counter | LKM | Class II | 21 CFR | |
864.5200 | 81- Hematology | |||
Automated | ||||
Urinalysis | ||||
System | KQO | Class I | 21 CFR | |
862.2900 | 75- Chemistry |
5.2 Intended Use
AUTION EYE AI-4510 Urine Particle Analysis System is a fully automated urine particle analyzer for in vitro diagnostic use. AUTION EYE AI-4510 is intended for the quantitative measurement of red blood cells (RBC), white blood cells (WBC) and squamous epithelial cells (SQEC), the semi-quantitative measurement of bacteria (BACT) and crystals (CRYS) and the qualitative measurement of white blood cell clumps (WBCC), non-squamous epithelial cells (NSE), hyaline casts (HY AL), non-hyaline casts (NHC), yeast (YST), mucus (MUCS) and sperm (SPRM) in urine samples.
A trained operator can set criteria for flagging specimens. All instrument analyte image decisions should be reviewed and reclassified as necessary by a trained technologist.
The AUTION EYE AI-4510 analyzer can be used as a standalone unit or combined with an AUTION MAX AX-4060 urine chemistry analyzer.
5.3 Device Description
The AI-4510 System (AUTION EYE AI-4510) is a fully automated urine particle analyzer for in vitro diagnostic use that uses flow cell digital imaging technology in a clinical laboratory setting. Based on images captured in the flow method, the instrument automatically classifies the images of various formed elements. The AI-4510 System can
6
quantitatively measure RBC, WBC, and SQEC; semi-quantitatively measure BACT, and CRYS; and qualitatively measure WBCC, NSE, HYAL, NHC, YST, MUCS and SPRM in urine samples. In addition, the AI-4510 System allows trained operators to manually review and reclassify all the element images collected by the system.
5.4 Substantial Equivalence
The following Table 2 shows the comparisons between the predicate and candidate devices and identifies the major technological and performance characteristics.
| COMPONENT/
CHARACTERISTIC | PROPOSED | PREDICATE |
---|---|---|
510(K) Number | K232416 | K093861 |
Device | AUTION EYE AI-4510 Urine | |
Particle Analysis System | iQ200 System with Lamina | |
Cradle | ||
Device Type | Automated Cell Counter | Automated Cell Counter |
FDA Product Code | LKM, KQO | LKM, KQO |
FDA Authorization Use | Laboratory Use | Laboratory Use |
Intended Use and | ||
Indication for Use | AUTION EYE AI-4510 Urine | |
Particle Analysis System is a | ||
fully automated urine particle | ||
analyzer for in vitro diagnostic | ||
use. AUTION EYE AI-4510 is | ||
intended for the quantitative | ||
measurement of red blood cells | ||
(RBC), white blood cells | ||
(WBC) and squamous | ||
epithelial cells (SQEC), the | ||
semi-quantitative measurement | ||
of bacteria (BACT) and crystals | ||
(CRYS) and the qualitative | ||
measurement of white blood | ||
cell clumps (WBCC), non- | ||
squamous epithelial cells | ||
(NSE), hyaline casts (HYAL), | ||
non-hyaline casts (NHC), yeast | The iQ®200 System is an in-vitro diagnostic device used to | |
automate the complete | ||
urinalysis profile, including | ||
urine test strip chemistry panel | ||
and microscopic sediment | ||
analysis. | ||
(YST), mucus (MUCS) and | ||
sperm (SPRM) in urine | ||
samples. | ||
A trained operator can set | ||
criteria for flagging specimens. | ||
All instrument analyte image | ||
decisions should be reviewed | ||
and reclassified as necessary by | ||
a trained technologist. | ||
The AUTION EYE AI-4510 | ||
analyzer can be used as a | ||
standalone unit or combined | ||
with an AUTION MAX AX- | ||
4060 urine chemistry analyzer. | Optionally, the iQ200 analyzer | |
can be used as a stand-alone unit, | ||
or the results from the iQ200 | ||
analyzer can be combined with | ||
other urine chemistry results | ||
received from an LIS. It | ||
produces quantitative or | ||
qualitative counts of all formed | ||
sediment elements present in | ||
urine, including cells, casts, | ||
crystals, and organisms. A | ||
competent human operator can | ||
set criteria for auto-reporting and | ||
flagging specimens for review. | ||
All instrument analyte image | ||
decisions may be reviewed and | ||
overridden by a trained | ||
technologist. | ||
Measurement Principle | Same as predicate | Flow digital imaging |
Parameters | Red blood cells (RBC), White | |
blood cells (WBC), White blood | ||
cell clumps (WBCC), Squamous | ||
epithelial cells (SQEC), Non- | ||
squamous epithelial cells (NSE), | ||
Hyaline casts (HYAL), non- | ||
hyaline casts (NHC ), Bacteria | ||
(BACT), Crystals (CRYS), Yeast | ||
(YST), | ||
Mucus (MUCS) and | ||
Sperm (SPRM) | Red blood cells (RBC), White | |
blood cells (WBC), White blood | ||
cell clumps (WBCC), Squamous | ||
epithelial cells (SQEC), Non- | ||
squamous epithelial cells (NSE), | ||
Hyaline casts (HYAL), | ||
Unclassified casts (NHC or | ||
UNCC), | ||
Bacteria (BACT), Crystals | ||
(CRYS), Yeast (YST), Mucous | ||
(MUCS), | ||
Sperm (SPRM), | ||
Dysmorphic RBC and | ||
Unclassified Crystals | ||
Automatic Classification | Red blood cells (RBC), white | |
blood cells (WBC), white blood | ||
cell clumps (WBCC), | ||
squamous epithelial cells | ||
(SQEC), non-squamous epithelial | ||
cells (NSE), hyaline casts | ||
(HYAL), non-hyaline casts | ||
(NHC), bacteria (BACT), crystal | ||
(CRYS), yeast (YST), mucus | ||
(MUCS) and sperm (SPRM) | Red Blood Cells (RBC), White | |
Blood Cells (WBC), White | ||
Blood Cell Clumps (WBCC), | ||
Squamous Epithelial Cells | ||
(SQEC), Non | ||
(While a dysmorphic red blood | ||
cell is counted as a red blood cell, | ||
the flag can be automatically | ||
assigned for the dysmorphic red | ||
blood cell.) | Squamous Epithelial Cells | |
(NSE), Bacteria (BACT), | ||
Crystals (UNCX), Hyaline Cast | ||
(HYAL), Unclassified Cast | ||
(UNCC), Yeast (BYST/HYST), | ||
Sperm | ||
(SPRM), Mucus (MUCS) | ||
Manual Classification | Red blood cells: 2 items | |
Dysmorphic red blood cells | ||
(DRBC) and red blood cell | ||
clumps (RBCC) | Red blood cells: 2 items | |
Dysmorphic red blood cells | ||
(DRBC) and red blood cell | ||
clumps (RBCC) | ||
Crystal: 10 items Calcium oxalate | ||
crystal (CAOX), calcium | ||
phosphate crystal (CAPH), | ||
magnesium ammonium | ||
phosphate crystal (TPO4), | ||
leucine crystal (LEUC), uric acid | ||
crystal (URIC), calcium | ||
carbonate crystal (CACB), | ||
cystine crystal (CYST), tyrosine | ||
crystal (TYRO), | ||
amorphous salts (phosphoric | ||
acid, uric acid) (AMOR) and | ||
unclassified crystal (UNCX) | Crystal: 10 items Calcium | |
oxalate crystal (CAOX), | ||
calcium phosphate crystal | ||
(CAPH), magnesium | ||
ammonium phosphate crystal | ||
(TPO4), leucine crystal (LEUC), | ||
uric acid crystal (URIC), | ||
calcium carbonate crystal | ||
(CACB), cystine crystal | ||
(CYST), tyrosine crystal | ||
(TYRO), | ||
amorphous salts (phosphoric | ||
acid, uric acid) (AMOR) and | ||
unclassified crystal (UNCX) | ||
Casts: 6 items | ||
Granular casts (GRAN), waxy | ||
casts (WAXY), RBC casts | ||
(RBCT), WBC casts (WBCT), | ||
epithelial casts (EPIC) and fatty | ||
casts (FATC) | Casts: 6 items | |
Granular casts (GRAN), waxy | ||
casts (WAXY), RBC casts | ||
(RBCT), WBC casts (WBCT), | ||
epithelial casts (EPIC) and fatty | ||
casts (FATC) | ||
Yeast: 1 item | ||
Budding yeast (BYST) | Yeast: 1 item | |
Budding yeast (BYST) | ||
Epithelial cells: 2 items Renal | ||
tubular epithelial cells (REEP), | ||
transitional epithelial cells | ||
(TREP) | Epithelial cells: 2 items Renal | |
tubular epithelial cells (REEP), | ||
transitional epithelial cells | ||
(TREP) | ||
Fat: 2 items | Fat: 2 items | |
Fat (FAT) and oval fat body | ||
(OVFB) | Fat (FAT) and oval fat body | |
(OVFB) | ||
Other categories: 5 items | ||
Trichomonas (TRCH), inclusion | Other categories: 5 items | |
cells (INCC), parasite (PARA), | ||
artifact (ART) and unclassified | ||
(UNCL) | Trichomonas (TRCH), inclusion | |
cells (INCC), parasite (PARA), | ||
artifact (ART) and unclassified | ||
(UNCL) | ||
Specimen Type / | ||
Measurement Object | Urine | Urine |
Reagents | AUTION EYE Sheath Solution | |
Concentrated Washing Solution 3 | ||
AUTION EYE Calibrator | iQ Lamina Iris Diluent Iris | |
System Cleanser | ||
iQ Focus Solution | ||
Quality Control Solution | AUTION EYE Control Solution | |
(It consists of High and Low | ||
levels.) | iQ Positive control, | |
iQ Negative control | ||
Sample Consumption | ||
Volume | Maximum 1 mL | Approximately 1.3 mL |
Required Volume | 2 mL or more | Minimum volume 3 mL |
Measurement Time | Approximately 45 seconds/test | |
(Excluding cases in which large | ||
numbers of formed elements are | ||
present or in the case of control | ||
measurement) | 101 seconds/test | |
Warm up time | Maximum 10 minutes (Duration | |
after the power is turned ON. The | ||
warm- up time is extended if a | ||
readjustment process is added | ||
during startup.) | The iQ200 System should be | |
allowed to warm up for 1 or 2 | ||
hours if it was turned off for | ||
more than 6 hours. | ||
Memory Capacity | Measurement results (Normal): | |
10,000 tests | Onboard storage of up to 10,000 | |
patient results | ||
Number of Captured | ||
Images | Three digital cameras capture | |
1,500 frames per sample | A digital camera captures 500 | |
frames per sample | ||
Capturing Images | Takes images with 3 different | |
focal points using 3 digital | ||
cameras | Presents a specimen to a | |
microscope coupled to a 1.3- | ||
megapixel CCD (charge | ||
coupling device) digital camera | ||
Power | 100 - 240 V AC, 50/60 Hz | |
(Including fluctuations of | ||
±10%) | Microscopy module - 90-240 | |
VAC 50-60 Hz | ||
200 watts max | ||
Intended | ||
Environment | Indoor use only | Indoor use only |
Measurement | ||
Environment | Temperature: 59 to 86 °F, | |
Humidity: 20 to 80% (No | ||
condensation) | Temperature: 15-30°C (59-86°F) | |
Humidity: 20% - 80% non- | ||
condensing | ||
Measurement | ||
source | Strobe lamp | Strobe lamp |
Dimensions | 530 (W) × 600 (D) × 650 (H) mm | |
(including the sampler) |
530 (W) × 200 (D) × 135 (H) mm
(sampler only) | Microscopy module - 56 H x 59
W x 64.8 D cm (22 H x 23 W x
25.5 D in.) |
| Weight | Analyzer (with the sampler):
Approx. 57 kg Sampler: Approx.
4 kg | Microscopy module -
45.4 kg (100 lbs.) |
Table 2. Comparison Between AUTION EYE AI-4510 and iQ200 SYSTEM
7
8
9
10
11
5.5 Test Principle and Technology
The principle of operation of the AI-4510 System is based on image capture and the digital processing of images for particle analysis and recognition from a locked sorting algorithm for clustering and classification.
The instrument uses flow digital imaging technology with a flow cell and Complementary Metal- Oxide- Semiconductor (CMOS) image sensors. As the urine passes through the flow cell, it is illuminated by a strobe lamp. Color images are recorded from three different focal points by the CMOS image sensors. The software processes the recorded images, automatically identifying and classifying the formed elements based on the sorting algorithm. The images and the classification of the formed elements are also displayed on the device screen for the operator. The results of the measurements of formed elements for each sample can be centrally controlled by the computer. Images that could not be classified automatically can be classified manually.
5.6 Summary of Performance Data
Clinical and bench testing were conducted to verify the performance characteristics of this device. This testing showed acceptable device performance that is substantially equivalent to the performance of the predicate device.
Precision
Precision for the AI-4510 System was evaluated to estimate repeatability, within-laboratory precision, and reproducibility for quantitative analytes: Red Blood Cell (RBC), White Blood Cell (WBC), and Squamous Epithelial Cells (SQEC), and repeatability for all semi-quantitative and qualitative elements: Bacteria (BACT), Crystals (CRYS), White blood cell clumps (WBCC), Nonsquamous epithelial cells (NSE), Hyaline casts (HYAL), non-hyaline casts (NHC), Yeast (YST), Mucus (MUCS) and Sperm (SPRM).
Precision studies were conducted in accordance with the general guidelines established in CLSI EP05-A3; (Third Edition)- Evaluation of Precision Devices; Approved Guideline
Precision studies were conducted to evaluate measurement imprecision using both controlled materials and clinical samples, with all results meeting the predefined acceptance criteria.
There were three major studies conducted to demonstrate the precision of the AI-4510 System:
12
Repeatability Study- (Quantitative, Semiquantitative, and Qualitative Elements) Results were collected with one (1) instrument, at one (1) site, with one (1) operator and 10 replicates, using clinical urine samples in the evaluation of repeatability for all twelve (12) elements from low to high concentrations.
Within-Laboratory Precision Study- (Quantitative Elements) Results collected over twenty (20) days with two (2) runs per day and two (2) replicates per run using ARKAY control materials prepared using clinical samples.
Reproducibility Study-(Quantitative Elements) Results collected from three (3) sites, with one (1) analyzer per site, and testing conducted over five (5) days with two (2) runs per day and three (3) replicates per run using commercially available control materials and ARKRAY control materials prepared using clinical samples.
Results from the analysis conducted for each study is presented in Tables 3-6 below.
Element | Test Level | Mean Value (/μL) | Repeatability | |
---|---|---|---|---|
SD | %CV | |||
RBC | Low | 7.5 | 1.2 | 16.2 |
MDL | 42.1 | 3.2 | 7.7 | |
Mid | 468.8 | 16.6 | 3.5 | |
High | 858.7 | 30.6 | 3.6 | |
WBC | Low | 7.8 | 1.3 | 17.2 |
MDL | 38.5 | 4.8 | 12.5 | |
Mid | 425.2 | 7.8 | 1.8 | |
High | 918.7 | 17.5 | 1.9 | |
SQEC | Low | 6.1 | 0.9 | 14.7 |
MDL | 39.6 | 3.7 | 9.4 | |
Mid | 91.6 | 4.4 | 4.8 | |
High | 161.5 | 6.9 | 4.3 |
Table 3. Repeatability Results - Quantitative Elements
Table 4. Repeatability Results - Semi-Quantitative and Qualitative Elements
| Element | n | Test Level | Avg. Conc.
(/μL) | % Agreement with expected
rank |
|---------|----|------------|---------------------|-----------------------------------|
| BACT | 10 | Level 1 | 0.0 | 100.0% |
| | 10 | Level 2 | 55.7 | 100.0% |
| | 10 | Level 3 | 78.9 | 100.0% |
| | 10 | Level 4 | 166.5 | 100.0% |
| CRYS | 10 | Level 1 | 0.0 | 100.0% |
| | 10 | Level 2 | 41.7 | 100.0% |
| | 10 | Level 3 | 118.1 | 100.0% |
| | 10 | Level 4 | 200.7 | 100.0% |
| | 10 | Level 5 | 330.1 | 100.0% |
13
| Element | n | Test Level | Avg. Conc.
(/μL) | % Agreement with expected
rank |
|---------|----|---------------|---------------------|-----------------------------------|
| NSE | 10 | Negative | 0.0 | 100.0% |
| NSE | 10 | Low positive | 4.8 | 80.0% |
| NSE | 10 | High Positive | 15.5 | 100.0% |
| HYAL | 10 | Negative | 0.0 | 100.0% |
| HYAL | 10 | Low positive | 1.2 | 100.0% |
| HYAL | 10 | High Positive | 8.2 | 100.0% |
| NHC | 10 | Negative | 0.0 | 100.0% |
| NHC | 10 | Low positive | 1.2 | 100.0% |
| NHC | 10 | High Positive | 12.9 | 100.0% |
| WBCC | 10 | Negative | 0.0 | 100.0% |
| WBCC | 10 | Low positive | 3.3 | 100.0% |
| WBCC | 10 | High Positive | 15.5 | 100.0% |
| YST | 10 | Negative | 0.0 | 100.0% |
| YST | 10 | Low positive | 11.4 | 70.0% |
| YST | 10 | High Positive | 49.3 | 100.0% |
| MUCS | 10 | Negative | 0.1 | 100.0% |
| MUCS | 10 | Low positive | 32.8 | 100.0% |
| MUCS | 10 | High Positive | 106.2 | 100.0% |
| SPRM | 10 | Negative | 0.0 | 100.0% |
| SPRM | 10 | Low positive | 7.4 | 100.0% |
| SPRM | 10 | High Positive | 32.2 | 100.0% |
Table 5. Within-Laboratory Precision Results
Mean Value | Repeatability | Between Run | Between Day | Within Laboratory | |||||
---|---|---|---|---|---|---|---|---|---|
Level | (/μL) | SD | %CV | SD | %CV | SD | %CV | SD | %CV |
RBC | |||||||||
Low | 8.1 | 2.0 | 24.7 | 0.3 | 3.7 | 0.2 | 2.3 | 2.0 | 25.1 |
RBC | |||||||||
MDL | 43.1 | 4.2 | 9.8 | 2.9 | 6.7 | 0.0 | 0.0 | 5.1 | 11.9 |
RBC | |||||||||
High | 515.7 | 22.8 | 4.4 | 18.4 | 3.6 | 13.2 | 2.6 | 32.2 | 6.2 |
WBC | |||||||||
Low | 7.9 | 1.7 | 21.9 | 1.2 | 14.8 | 0.0 | 0.0 | 2.1 | 26.4 |
WBC | |||||||||
MDL | 42.9 | 3.4 | 7.9 | 4.0 | 9.3 | 1.5 | 3.5 | 5.5 | 12.7 |
WBC | |||||||||
High | 470.1 | 13.4 | 2.8 | 23.8 | 5.1 | 10.6 | 2.3 | 29.3 | 6.2 |
SQEC | |||||||||
Low | 8.6 | 1.4 | 16.1 | 0.0 | 0.0 | 0.5 | 5.7 | 1.5 | 17.0 |
SQEC | |||||||||
MDL | 39.5 | 3.1 | 7.9 | 0.7 | 1.7 | 1.1 | 2.7 | 3.4 | 8.5 |
SQEC | |||||||||
High | 158.0 | 6.3 | 4.0 | 2.0 | 1.3 | 2.2 | 1.4 | 7.0 | 4.4 |
14
| Level | Mean
Value
(cells/µL) | Repeatability | | Between Run | | Between Day | | Between Site | | Reproducibility | |
|-----------|-----------------------------|---------------|------|-------------|-----|-------------|-----|--------------|-----|-----------------|------|
| | | SD | %CV | SD | %CV | SD | %CV | SD | %CV | SD | %CV |
| RBC Low | 8.4 | 2.0 | 23.4 | 0.0 | 0.0 | 0.7 | 8.0 | 0.5 | 6.2 | 2.1 | 25.5 |
| RBC Mid | 86.2 | 6.6 | 7.6 | 1.5 | 1.7 | 0.9 | 1.1 | 6.5 | 7.5 | 9.4 | 10.9 |
| RBC High | 675.7 | 53.9 | 8.0 | 0.0 | 0.0 | 13.4 | 2.0 | 64.3 | 9.5 | 85.0 | 12.6 |
| WBC Low | 5.7 | 1.4 | 24.5 | 0.5 | 8.2 | 0.3 | 4.8 | 0.2 | 3.2 | 1.5 | 26.5 |
| WBC Mid | 86.8 | 6.4 | 7.4 | 2.8 | 3.2 | 1.7 | 2.0 | 1.9 | 2.2 | 7.4 | 8.6 |
| WBC High | 645.0 | 20.9 | 3.2 | 20.4 | 3.2 | 13.8 | 2.1 | 37.6 | 5.8 | 49.6 | 7.7 |
| SQEC Low | 14.9 | 2.1 | 14.4 | 0.0 | 0.0 | 0.3 | 2.0 | 0.6 | 4.2 | 2.3 | 15.1 |
| SQEC High | 87.2 | 6.5 | 7.4 | 2.8 | 3.2 | 0.0 | 0.0 | 7.6 | 8.7 | 10.3 | 11.9 |
Table 6. All Sites Combined - Reproducibility Study Results
Linearity
Linearity testing was performed for the AI-4510 System using one instrument to establish the linear interval for quantitative elements: RBC, WBC, and SQEC. The study was conducted following CLSI EP06-2" Edition and met the predefined acceptance criteria, establishing the linearity interval of the AI-4510 System quantitative elements as shown in Table 7 below.
Table 7. AI-4510 System Linearity Interval | |
---|---|
Quantitative Element | Linear Range |
RBC | 5-1,000 RBC/μL |
WBC | 5-1,000 WBC/μL |
SQEC | 5-180 SQEC/μL |
7 AI 4510 System Linearity Interval
Limit of Detection
Limit of Blank (LoB), Limit of Detection (LoD) and Limit of Quantitation (LoQ) were conducted for the AI-4510 System quantitative (RBC, WBC, SQEC) and semiquantitative (CRYS, BACT) elements following CLSI-EP17-A2 Evaluation of Detection Capability For Clinical Laboratory Measurement Procedures; Approved Guideline -Second Edition. Based on the results of the study, as shown below in Table 8, all elements met the predefined acceptance criteria, thereby establishing the LoB, LoD, and LoQ for each element.
Table 8. Results of Detection Limits | |||
---|---|---|---|
Element(cells/µL) | LoB | LoD | LoQ |
RBC | 0.0 | 2.3 | 2.3 |
WBC | 0.0 | 1.5 | 1.5 |
SQEC | 0.2 | 1.6 | 1.6 |
Table 8. Results of Detection Limits | |||
---|---|---|---|
-- | -- | -------------------------------------- | -- |
15
Element(cells/µL) | LoB | LoD | LoQ |
---|---|---|---|
CRYS | 0.0 | 6.4 | 6.4 |
BACT | 0.0 | 6.0 | 6.0 |
Carryover
Carryover testing was performed for the AI-4510 System to confirm that there are no carryover contaminations for all twelve (12) elements. This testing was conducted using pre-prepared concentrations of high-level and low-level samples which were aliquoted into 5 tubes each and measured alternatively as shown in Table 9 for each tested element. Based on the predefined acceptance criteria, no carryover effect was detected.
Measurement sequence | Sample placement in rack |
---|---|
Set 1 | H1 L1 H2 L2 H3 L3 H4 L4 H5 L5 |
Set 2 | H1 L1 H2 L2 H3 L3 H4 L4 H5 L5 |
Set 3 | H1 L1 H2 L2 H3 L3 H4 L4 H5 L5 |
Set 4 | H1 L1 H2 L2 H3 L3 H4 L4 H5 L5 |
Set 5 | H1 L1 H2 L2 H3 L3 H4 L4 H5 L5 |
H: High level sample, L: Low level sample
Interference
Interference testing was performed on the AI-4510 System to evaluate the influence of interfering substances on the measurement of twelve (12) particle elements using the AI-4510 System. A dose dependency evaluation was performed for those substances which were confirmed to have interference effects on the measurements to determine the highest concentration at which no interference effect is observed.
The results of this interference study are summarized in Tables 10-12 below.
| Element | Interferent | Concentration
Limit with No
Significant
Interference | Concentration of Interferent and Observed Effect |
|---------|-----------------|---------------------------------------------------------------|------------------------------------------------------------------------------|
| RBC | Trichomonas | 50 /μL | At 120 /µL falsely increased for negative samples |
| | Turbidity | 1+ ** | At 2+ falsely decreased for positive samples |
| | Bacteria | 4000 /μL | At 6000 /µL falsely decreased for positive samples |
| WBC | Yeast | 60 /μL | At 80 /µL falsely increased for negative samples and
low positive samples |
| | Trichomonas | - * | At 10 /µL falsely increased for negative samples |
| | Red Blood Cells | 1500 /μL | At 5000 /µL falsely increased for positive samples |
Table 10. Interference Effect on Manually Reviewed and Reclassified Results
16
Turbidity | 1+ ** | At 2+ falsely decreased for low positive samples | |
---|---|---|---|
WBCC | Bacteria | 7500 /μL | At 15000 /μL falsely decreased for low positive samples |
Trichomonas | 50 /μL | At 120 /μL falsely increased for negative samples | |
SQEC | Red Blood Cells | 1200 /μL | At 1500 /μL falsely decreased for positive samples |
Turbidity | 1+ ** | At 2+ falsely decreased for positive samples | |
Bacteria | 7500 /μL | At 15000 /μL falsely decreased for positive samples | |
BACT | Amorphous | ||
Urates | 120 /μL | At 160 /μL falsely increased for low positive samples | |
At 200 /μL falsely increased for negative samples and | |||
high positive samples | |||
Turbidity | 1+ ** | At 2+ falsely increased for low positive samples | |
Yeast | 60 /μL | At 80 /μL falsely increased for low positive samples | |
MUCS | Red Blood Cells | 1500 /μL | At 5000 /μL falsely increased for high positive samples |
Bacteria | 6000 /μL | At 7500 /μL falsely decreased for high positive samples | |
SPRM | Bacteria | 6000 /μL | At 7500 /μL falsely decreased for high positive samples |
- Concentration limit with no significant interference was not evaluated
** The qualitative rank as measured by an AUTION MAX AX-4060 Urine Chemistry Analyze
Table 11. Interference Effect on Auto-classified Results | ||||||
---|---|---|---|---|---|---|
-- | -- | -- | -- | -- | ---------------------------------------------------------- | -- |
Interference effect on Auto-classified results | |||
---|---|---|---|
Element | Interferent | Concentration limit with no significant interference | Concentration of Interferent and observed effect |
RBC | Yeast | 40 /uL | At 60/uL falsely increased for negative samples |
At 80/uL falsely increased for low positive samples | |||
Crystal | -* | At 330/uL falsely increased for negative samples | |
Trichomonas | 50 /uL | At 120/uL falsely increased for negative samples | |
Turbidity | 1+ ** | At 2+ falsely decreased for positive samples | |
Bacteria | 4000/uL | At 6000/uL falsely decreased for positive samples | |
WBC | Red blood cells | 400 /uL | At 800/uL falsely increased for negative samples |
At 1200/uL falsely increased for low positive samples | |||
At 1500/uL falsely increased for high positive samples | |||
Yeast | 40 /uL | At 60/uL falsely increased for negative samples | |
At 80/uL falsely increased for low positive samples | |||
Trichomonas | -* | At 10/uL falsely increased for negative samples and | |
positive samples | |||
Turbidity | 1+ ** | At 2+ falsely decreased for low positive samples | |
Bacteria | 7500 /uL | At 15000 /uL falsely decreased for low positive | |
samples | |||
WBCC | Red blood cells | 1200 /uL | At 5000 /uL falsely increased for negative samples |
17
Yeast | 60 /uL | At 80 /uL falsely increased for negative samples | ||
---|---|---|---|---|
Trichomonas | 20 /uL | At 50 /uL falsely increased for negative samples | ||
Red blood cells | 1200 /uL | At 1500/uL falsely decreased for positive samples | ||
SQEC | Turbidity | 1+ ** | At 2+ falsely decreased for positive samples | |
Bacteria | 7500 /uL | At 15000 /uL falsely decreased for positive samples | ||
NHC | Yeast | 60 /uL | At 80 /uL falsely increased for negative samples and | |
low positive samples | ||||
BACT | Amorphous | |||
urates | 120 /uL | At 200 /uL falsely increased for negative samples and | ||
high positive samples | ||||
Yeast | 60 /uL | At 80 /uL falsely increased for low positive samples | ||
Turbidity | 1+ ** | At 2+ falsely decreased for low positive samples | ||
YST | Red blood cells | 1200 /uL | At 5000/uL falsely increased for negative samples | |
and low positive samples | ||||
MUCS | Red blood cells | 1500 /uL | At 5000/uL falsely decreased for high positive | |
samples | ||||
Bacteria | 6000 /uL | At 7500/uL falsely decreased for high positive | ||
samples | ||||
SPRM | Bacteria | 6000 /uL | At 7500/uL falsely decreased for high positive | |
samples |
- Concentration limit with no significant interference not evaluated.
** The qualitative rank as measured by an AUTION MAX AX-4060 urine chemistry analyzer
Element | Interfering Substances | Highest Concentration Tested with No Interference |
---|---|---|
RBC | Viscosity | 1.24 mPa · s |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Yeast | 100 /μL | |
WBC | Viscosity | 1.24 mPa · s |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Turbidity | 2+ | |
WBCC | Viscosity | 1.24 mPa · s |
Red Blood Cells | 5000 /μL | |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Bacteria | 15000 /μL | |
Yeast | 100 /μL | |
SQEC | Viscosity | 1.24 mPa · s |
Trichomonas | 120 /μL | |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Yeast | 100 /μL | |
Turbidity | 2+ | |
Viscosity | 1.24 mPa · s | |
NSE | Trichomonas | 120 /μL |
Red Blood Cells | 5000 /μL | |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Bacteria | 15000 /μL | |
Yeast | 100 /μL | |
Turbidity | 2+ | |
HYAL | Viscosity | 1.24 mPa · s |
Trichomonas | 120 /μL | |
Red Blood Cells | 5000 /μL | |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Bacteria | 15000 /μL | |
Yeast | 100 /μL | |
Turbidity | 2+ | |
NHC | Viscosity | 1.24 mPa · s |
Trichomonas | 120 /μL | |
Red Blood Cells | 5000 /μL | |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Bacteria | 15000 /μL | |
Yeast | 100 /μL | |
BACT | Viscosity | 1.24 mPa · s |
Trichomonas | 120 /μL | |
Red Blood Cells | 5000 /μL | |
MUCS | 200 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Turbidity | 2+ | |
CRYS | Viscosity | 1.24 mPa · s |
Trichomonas | 120 /μL | |
Red Blood Cells | 5000 /μL | |
MUCS | 200 /μL | |
Amorphous Urates | 320 /μL | |
Bacteria | 15000 /μL | |
Yeast | 100 /μL | |
Turbidity | 2+ | |
YST | Viscosity | 1.24 mPa · s |
Trichomonas | 120 /μL | |
Red Blood Cells | 5000 /μL | |
MUCS | MUCS | 200 /μL |
Amorphous Urates | 320 /μL | |
Calcium Oxalate Crystal | 330 /μL | |
Bacteria | 15000 /μL | |
Turbidity | 2+ | |
MUCS | Viscosity | 1.24 mPa・s |
Trichomonas | ||
Amorphous Urates | ||
Calcium Oxalate Crystal | ||
Yeast | ||
Turbidity | 2+ | |
Viscosity | 1.24 mPa・s | |
Trichomonas | 120 /μL | |
SPRM | Red Blood Cells | 5000 /μL |
MUCS | ||
Amorphous Urates | ||
Calcium Oxalate Crystal | ||
Yeast | 100 /μL |
Table 12. Elements for which No Interference was Observed
18
19
Sample Stability
Sample stability was evaluated on the AI-4510 System to confirm the sample stability of twelve (12) elements when measured with the AI-4510 System. Testing was performed on both positive and negative samples for all twelve (12) elements at room temperature (15-30°C) and under refrigeration (2-8°C). In conclusion, all samples tested for each element met the predefined acceptance criteria, therefore establishing the sample stability at room temperature (15-30°C) for up to 2 hours and under refrigeration (2-8°C) for up to 6 hours for all twelve (12) elements measured by the AI-4510 System.
20
Method Comparison
A method comparison study was conducted at three (3) CLIA-Moderate complexity laboratories to evaluate the agreement of urine sample test results between the candidate device, the AI-4510 System, and the FDA-cleared predicate device, the iQ200 System (K093861) and manual microscopy. Testing was done by CLIA-trained operators using de-identified urine samples collected fresh within two (2) hours or refrigerated up to six (6) hours post collection. The study was conducted to evaluate the following 12 analytes: Quantitative analysis of red blood cells (RBC), white blood cells (WBC), and squamous epithelial cells (SQEC); Semiquantitative analysis of bacteria (BACT), and crystals (CRYS); Qualitative analysis of hyaline casts (HYAL), non-hyaline casts (NHC), non-squamous epithelial cells (NSE), yeast (YST), white blood cell clumps (WBCC), mucus (MUCS) and sperm (SPRM). Tables 13-16 summarize the reference range analysis as well as the overall clinical performance data for all sites combined. In summary, Quantitative, Semiquantitative and Qualitative parameters met the acceptance criteria.
Element | 95% Reference Limit | 90% CI |
---|---|---|
RBC | 9.02 | 7.34 - 10.70 |
WBC | 4.81 | 3.80 - 5.50 |
SQEC | 6.46 | 4.50 - 9.30 |
NSE | 3.21 | 2.50 - 4.54 |
NHC | 0.11 | 0.00 - 0.30 |
HYAL | 0.51 | 0.26 - 0.82 |
BACT | 119.6 | 66.28 - 180.66 |
CRYS | 0.03 | 0.00 - 0.00 |
YST | 0 | 0.00 - 0.00 |
WBCC | 0.05 | 0.00 - 0.30 |
MUCS | 26.6 | 20.50 - 35.39 |
SPRM | 0 | 0.00 - 0.00 |
Table 13. Reference Range results (n=247)
21
Weighted Deming Regression | |||||
---|---|---|---|---|---|
Element | Comparison | N | R2 | Intercept | Slope |
RBC | AI(M) vs. IQ(M) | 377 | 0.918 | 1.501 (0.432, 2.569) | 0.824 (0.763, 0.886) |
WBC | AI(M) vs. IQ(M) | 845 | 0.903 | 0.629 (-0.300. 1.558) | 0.968 (0.930, 1.006) |
SQEC | AI(M) vs. IQ(M) | 382 | 0.928 | -0.451 (-1.269, 0.367) | 0.933 (0.883, 0.982) |
Table 14. Method Comparison Results for Quantitative Elements
- (M) denotes manually reviewed and reclassified results.
Passing-Bablok Regression | |||||
---|---|---|---|---|---|
Element | Comparison | N | R2 | Intercept | Slope |
RBC | AI(M) vs. IQ(M) | 377 | 0.918 | 0.332 (-0.500, 1.490) | 0.824 (0.774, 0.886) |
WBC | AI(M) vs. IQ(M) | 845 | 0.903 | 1.992 (1.140, 3.067) | 0.891 (0.860, 0.925) |
SQEC | AI(M) vs. IQ(M) | 382 | 0.928 | 0.641 (-0.066, 1.493) | 0.873 (0.826, 0.923) |
- (M) denotes manually reviewed and reclassified results.
Table 15. Method Comparison results for Semi-quantitative elements
| 5
1
1 |
---|
------------- |
AI-4510 (Manual) vs. Manual Microscopy | |
---|---|
N | 1474 |
Sensitivity | 76.2% (72.9%, 79.3%) |
Specificity | 83.7% (81.0%, 86.1%) |
CRYS
AI-4510 (Manual) vs. Manual Microscopy | |
---|---|
N | 1474 |
PPA | 90.5% (85.1%, 94.1%) |
NPA | 98.2% (97.3%, 98.8%) |
Table 16. Method Comparison results for Qualitative elements NSE
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 765 |
PPA | 88.7% (77.4%, 94.7%) |
NPA | 84.3% (81.4%, 86.8%) |
NHC
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 765 |
PPA | 80.2% (71.6%, 86.7%) |
NPA | 83.8% (80.8%, 86.4%) |
22
HYAL
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 765 |
PPA | 85.0% (78.4%, 89.9%) |
NPA | 89.0% (86.3%, 91.2%) |
YST
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 765 |
PPA | 97.1% (85.1%, 99.5%) |
NPA | 99.6% (98.8%, 99.9%) |
WBCC
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 1474 |
PPA | 86.5% (80.5%, 90.8%) |
NPA | 89.3% (87.5%, 90.8%) |
MUCS
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 1474 |
PPA | 81.9% (76.3%, 86.5%) |
NPA | 88.0% (86.1%, 89.7%) |
SPRM
AI-4510 (Manual) vs. iQ200 (Manual) | |
---|---|
N | 1474 |
PPA | 86.2% (75.1%, 92.8%) |
NPA | 99.6% (99.2%, 99.8%) |
5.7 Proposed Labeling
Labeling adequately communicates device intended use, safety precautions and directions for use. It satisfies 21 CFR Part 809.10 for in vitro diagnostic devices.
5.8 Conclusion
ARKRAY has demonstrated the AI-4510 System is substantially equivalent to the predicate device, the iQ200 System, based upon design, test results, and indications for use. Any noted differences do not raise new issues of safety and effectiveness.