(196 days)
Not Found
Not Found
No
The device description and performance studies focus on a chemical reaction (catalase detection) and do not mention any computational analysis, algorithms, or learning processes.
No
The device is a diagnostic tool designed to detect indicators of Urinary Tract Infection (UTI), not to treat the condition itself.
Yes
The device is described as a "rapid screen for the detection of Urinary Tract Infection" and "detects both bacteria and/or white blood cells, common indicators of Urinary Tract Infection." This directly indicates its use in identifying a disease state, which is the definition of a diagnostic device.
No
The device description clearly outlines a physical test kit involving a tube, reagent powder, and hydrogen peroxide solution, which are hardware components. The detection of catalase activity is based on a chemical reaction producing foam, not software analysis.
Yes, this device is an IVD (In Vitro Diagnostic).
Here's why:
- Intended Use: The intended use explicitly states it's a "rapid screen for the detection of Urinary Tract Infection" and that it "detects both bacteria and/or white blood cells, common indicators of Urinary Tract Infection." This indicates it's used to examine a sample (urine) from the human body to provide information about a disease state (UTI).
- Device Description: The description details how the device works by detecting catalase activity in urine, which is associated with bacteria and white blood cells, both indicators of UTI. This confirms it's a test performed in vitro (outside the body) on a biological sample.
- Performance Studies: The document includes performance studies comparing Uriscreen to predicate devices and a reference culture method, which are standard practices for evaluating the performance of IVD devices.
- Predicate Devices: The mention of predicate devices (MULTISTIX and Uri-Test) further supports its classification as an IVD, as predicate devices are typically other legally marketed IVDs.
- Intended User/Care Setting: The intended users include both consumers and CLIA Registered Clinical Laboratories, which are common settings for the use of IVD devices.
All these factors align with the definition and characteristics of an In Vitro Diagnostic device.
N/A
Intended Use / Indications for Use
Uriscreen is a non-quantitative rapid screen for the detection of Urinary Tract Infection. Uriscreen detects both bacteria and/or white blood cells, common indicators of Urinary Tract Infection.
Uriscreen is a non-quantitative rapid screen, which detects catalase. Urinary catalase may be associated with White Blood Cells, bacteria and other cells, some of which may be indicators of urinary tract infection. Only Adults should use the test.
Product codes (comma separated list FDA assigned to the subject device)
JXA
Device Description
Uriscreen - Uriscreen is a rapid screen for the detection of Urinary Tract Infection. Uriscreen detects Catalase activity. Most organisms that commonly cause Urinary Tract Infection are Catalase positive. Additionally, Catalase activity is an indicator of white blood cells in urine. White blood cells are a common indicator of Urinary Tract Infection.
Uriscreen tubes contain a reagent powder, which enables Catalase detection. Urine is added to the tube to the line indicated, a few drops of hydrogen peroxide solution are added. Production of foam indicates Catalase activity. Catalase activity is indicative of bacteria and/or white blood cells in the urine. Most bacteria that commonly cause urinary tract infection are Catalase positive. The presence of bacteria and/or white blood cells in the urine are clearly indicative of Urinary Tract Infection.
Mentions image processing
Not Found
Mentions AI, DNN, or ML
Not Found
Input Imaging Modality
Not Found
Anatomical Site
Urinary Tract
Indicated Patient Age Range
Adults
Intended User / Care Setting
Consumers/Lay User, Clinical Laboratories
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
A clinical trial was done to compare the performance of the Uriscreen to Bayer Multistix Leukocyte esterase/Nitrite and the Uri-Test Nitrite in Urine.
To demonstrate the ease-of-use and the ability for the lay consumer to perform and interpret the Uriscreen test, we asked participants at a social club and MDC Associates to test blinded samples. We recruited 65 consumers to read the Uriscreen Package Insert, perform the test on a blinded sample and interpret the results. The blinded samples consisted of a negative, which contained water only and the positive sample contained water and yeast at 10 CFU/ml. All consumer results were confirmed by a trained Medical Technologist.
An Accuracy and Outcome Analysis study was done in three CLIA Registered Clinical Laboratories. Only patients presenting with symptom of Urinary Tract Infection were included in the study. Uriscreen test results were compared to culture, and based on our protocol criteria a positive culture is considered >100,000 CFU/ml.
Summary of Performance Studies (study type, sample size, AUC, MRMC, standalone performance, key results)
Phase I - Comparison to Predicate Devices
- Study Type: Clinical trial comparing Uriscreen to Bayer Multistix Leukocyte esterase/Nitrite and Uri-Test Nitrite in Urine.
- Sample Size: Not explicitly stated for each comparison, but implies a cohort from which results were derived.
- Key Results:
- Multistix Nitrite/LE vs. Uriscreen: Sensitivity = 100.00%, Specificity = 87.34%, Accuracy = 89.13%
- Uri-Test Nitrite in Urine vs. Uriscreen: Sensitivity = 80.00%, Specificity = 88.31%, Accuracy = 86.96%
Phase I - Comparison to Reference Culture Method
- Study Type: Clinical trial comparing Uriscreen to reference culture method.
- Sample Size: 80 (11+12+0+69 from table sums to 80; assuming table represents total samples)
- Key Results: Sensitivity = 100.00%, Specificity = 85.19%, Accuracy = 86.96%
Phase II - Consumer Usability Study
- Study Type: Ease-of-use and interpretation study by lay consumers.
- Sample Size: 65 consumers.
- Key Results: 100% accuracy was observed for consumer performance and interpretation compared to a trained Medical Technologist.
- Sensitivity = 100.00%, Specificity = 100.00%, Accuracy = 100.00%
Phase III - Accuracy and Outcome Analysis in Clinical Laboratories
- Study Type: Accuracy and Outcome Analysis in three CLIA Registered Clinical Laboratories.
- Sample Size: 139 patients.
- Key Results:
- Uriscreen vs. Culture (>100,000 CFU/ml): Sensitivity = 95.35%, Specificity = 72.92%, Accuracy = 79.86%
- Leukocyte esterase (LE) vs. Culture (>100,000 CFU/ml): Sensitivity = 90.48%, Specificity = 55.67%, Accuracy = 66.19%
- Nitrite vs. Culture (>100,000 CFU/ml): Accuracy = 79.14% (Sensitivity = 16/43 = 37.21%)
- Uriscreen vs. Culture (10,000 to >100,000 CFU/ml): Sensitivity = 82%, Specificity = 87%, Accuracy = 84%
Overall Safety and Efficacy Statement Summaries (potentially redundant with above but explicitly listed):
- Uriscreen performed by untrained consumers compared to Bayer Multistix: Sensitivity - 100%, Specificity - 87%, Accuracy - 89%.
- Uriscreen performed by lay consumer compared to Uri-Test Nitrite in Urine: Sensitivity - 80%, Specificity - 88%, Accuracy - 87%.
- Uriscreen performed by lay consumer compared to culture: Sensitivity - 100%, Specificity - 85%, Accuracy - 87%.
- Uriscreen tested in three clinical laboratories compared to reference culture results: Sensitivity - 95%, Specificity - 73%, Accuracy - 80%.
Key Metrics (Sensitivity, Specificity, PPV, NPV, etc.)
Sensitivity, Specificity, Accuracy are provided in the "Summary of Performance Studies" section. No other key metrics like PPV or NPV are explicitly provided.
Predicate Device(s): If the device was cleared using the 510(k) pathway, identify the Predicate Device(s) K/DEN number used to claim substantial equivalence and list them here in a comma separated list exactly as they appear in the text. List the primary predicate first in the list.
Not Found (K/DEN numbers for predicates are not provided in the text; only product names are listed under "SUBSTANTIALLY EQUIVALENT DEVICES")
Reference Device(s): Identify the Reference Device(s) K/DEN number and list them here in a comma separated list exactly as they appear in the text.
Not Found
Predetermined Change Control Plan (PCCP) - All Relevant Information for the subject device only (e.g. presence / absence, what scope was granted / cleared under the PCCP, any restrictions, etc).
Not Found
§ 866.2660 Microorganism differentiation and identification device.
(a)
Identification. A microorganism differentiation and identification device is a device intended for medical purposes that consists of one or more components, such as differential culture media, biochemical reagents, and paper discs or paper strips impregnated with test reagents, that are usually contained in individual compartments and used to differentiate and identify selected microorganisms. The device aids in the diagnosis of disease.(b)
Classification. Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 866.9.
0
OCT 7 1998
510(k) Summary
981084
Date of Summary: March 21, 1998
Product Name: Uriscreen
Sponsor's Name: Diatech Diagnostics, Inc. 90 Windom Street Boston, MA 02134
CORRESPONDENT: MDC ASSOCIATES
Fran White Regulatory Consultant 15 Oak Street Beverly Farms, MA 01915
SUBSTANTIALLY EQUIVALENT DEVICES:
Product: MULTISTIX- Reagent Strip for Urinalysis Manufactured by: Bayer Diagnostics
Product: Uri-Test - Nitrite in Urine Test Manufactured by: Technical Chemical and Product Inc.
PRODUCT DESCRIPTION:
Uriscreen - Uriscreen is a rapid screen for the detection of Urinary Tract Infection. Uriscreen detects Catalase activity. Most organisms that commonly cause Urinary Tract Infection are Catalase positive. Additionally, Catalase activity is an indicator of white blood cells in urine. White blood cells are a common indicator of Urinary Tract Infection.
INTENDED USE:
Uriscreen is a non-quantitative rapid screen for the detection of Urinary Tract Infection. Uriscreen detects both bacteria and/or white blood cells, common indicators of Urinary Tract Infection.
1
SUMMARY OF TECHNOLOGY:
Uriscreen tubes contain a reagent powder, which enables Catalase detection. Urine is added to the tube to the line indicated, a few drops of hydrogen peroxide solution are added. Production of foam indicates Catalase activity. Catalase activity is indicative of bacteria and/or white blood cells in the urine. Most bacteria that commonly cause urinary tract infection are Catalase positive. The presence of bacteria and/or white blood cells in the urine are clearly indicative of Urinary Tract Infection.
PERFORMANCE DATA:
A clinical trial was done to compare the performance of the Uriscreen to Bayer Multistix Leukocyte esterase/Nitrite and the Uri-Test Nitrite in Urine. These data clearly demonstrate that the performance of the Uriscreen test is substantially equivalent to the predicate devices.
Phase I
Multistix Nitrite/LE vs. Uriscreen
| Multistix + | Multistix - | |
|---|---|---|
| Uriscreen + | 13 | 10 |
| Uriscreen - | 0 | 69 |
| Sensitivity = | 100.00% | |
| Specificity = | 87.34% | |
| Accuracy = | 89.13% |
Uri-Test Nitrite in Urine vs. Uriscreen
| Nitrite + | Nitrite - | |
|---|---|---|
| Uriscreen + | 12 | 9 |
| Uriscreen - | 3 | 68 |
| Sensitivity = 80.00% | ||
| Specificity = 88.31% | ||
| Accuracy = 86.96% |
2
Uriscreen was also compared to reference culture method.
| Culture vs. Uriscreen | ||
|---|---|---|
| Culture + | Culture - | |
| Uriscreen + | 11 | 12 |
| Uriscreen - | 0 | 69 |
| Sensitivity = | 100.00% | |
| Specificity = | 85.19% | |
| Accuracy = | 86.96% |
Uriscreen was performed by consumers on their own urine. Data confirm that Uriscreen is easy to use and can be effectively used by consumers with no training or instructions.
Phase II
To demonstrate the ease-of-use and the ability for the lay consumer to perform and interpret the Uriscreen test, we asked participants at a social club and MDC Associates to test blinded samples. We recruited 65 consumers to read the Uriscreen Package Insert, perform the test on a blinded sample and interpret the results. The blinded samples consisted of a negative, which contained water only and the positive sample contained water and yeast at 10 CFU/ml. All consumer results were confirmed by a trained Medical Technologist. 100% accuracy was observed.
Consumer vs. Medical Technologist
| | Uriscreen + (Med Tech) | Uriscreen -
(Med Tech) | Row
Total |
|---------------------------|------------------------|---------------------------|--------------|
| Uriscreen +
(consumer) | 32 | 0 | 32 |
| Uriscreen -
(consumer) | 0 | 33 | 33 |
| Total | 32 | 33 | 65 |
| Sensitivity = | 100.00% |
|---|---|
| Specificity = | 100.00% |
| Accuracy = | 100.00% |
3
Phase III
)
To demonstrate the performance of the Uriscreen test, an Accuracy and Outcome Analysis study was done in three CLIA Registered Clinical Laboratories. Only patients presenting with symptom of Urinary Tract Infection were included in the study.
Uriscreen test results were compared to culture, and based on our protocol criteria a positive culture is considered >100,000 CFU/ml.
| Culture + | Culture - | Row Total | |
|---|---|---|---|
| Uriscreen + | 41 | 26 | 67 |
| Uriscreen - | 2 | 70 | 72 |
| Total | 43 | 96 | 139 |
Uriscreen vs. Culture (>100,000)
| Sensitivity = | 95.35% |
|---|---|
| Specificity = | 72.92% |
| Accuracy = | 79.86% |
| _eukocyte esterase (LE) vs. Culture | |||
|---|---|---|---|
| ------------------------------------- | -- | -- | -- |
| (>100,000) | ||||||
|---|---|---|---|---|---|---|
| Culture + | Culture - | Row | ||||
| Total | ||||||
| LE + | 38 | 43 | 81 | |||
| LE - | 4 | 54 | 58 | |||
| Total | 42 | 97 | 139 |
| Sensitivity = | 90.48% |
|---|---|
| Specificity = | 55.67% |
| Accuracy = | 66.19% |
s
4
| | Nitrite vs. Culture
(>100,000) | | | |
|-----------|-----------------------------------|----|-----------|--------------|
| | Culture + | | Culture - | Row
Total |
| Nitrite + | | 16 | 2 | 18 |
| Nitrite - | | 27 | 94 | 121 |
| Total | | 43 | 96 | 139 |
Accuracy =
Based on our protocol criteria, a positive culture would have significant growth of >100,000. Uriscreen demonstrates 95% Sensitivity when compared to positive culture. Leukocyte esterase only demonstrates 90% Sensitivity when compared to positive culture and Nitrite is only 37% Sensitive.
79.14%
| Uriscreen vs. Culture (≥10,000 to |
|---|
| >100,000) |
| Culture - Positive | Culture - Neg | Row Total | |
|---|---|---|---|
| Uriscreen - Pos | 58 | 9 | 67 |
| Uriscreen - Neg | 13 | 59 | 72 |
| Total | 71 | 68 | 139 |
| Sensitivity = | 82% |
|---|---|
| Specificity = | 87% |
| Accuracy = | 84% |
Uriscreen demonstrates a specificity of 87% and a sensitivity of 82% at 103 - 103 CFU/ml.
5
There are 9 specimens with negative culture results (No Growth) and positive Uriscreen results. The Uriscreen test will produce a positive result if other cells are present in the urine. Of the 9 positive Uriscreen/No Growth cultures, 6 were reported to have White blood cells or blood in the urine.
Uriscreen is a better indicator of UTI than either Leukocyte esterase (Sensitivity 90%) or Nitrite (Sensitivity 37%) based on positive culture results (>100,000). When you look at culture growth from >10,000 to >100,000 Uriscreen sensitivity is 82%, but the specificity is 87%.
STATEMENT OF SAFETY AND EFFICACY:
When compared to a Bayer Multistix and the Uriscreen was performed by untrained consumers, the product performance was as follows:
Sensitivity - 100% Specificity - 87 Accuracy - 89%
When the Uriscreen test performed by the lay consumer and was compared to Uri-Test Nitrite in Urine, the performance of the Uriscreen test was as follows:
Sensitivity - 80% Specificity - 88% Accuracy - 87%
When the Uriscreen test performed by the lay consumer was compared to culture, performance was as follows:
Sensitivity - 100% Specificity - 85% Accuracy - 87%
When Uriscreen was tested in three clinical laboratories, comparing Uriscreen test results to reference culture results, performance was as follows:
Sensitivity - 95% Specificity - 73% Accuracy - 80%
These data clearly demonstrate the safety and efficacy of Uriscreen.
Uriscreen was performed by consumers on their own urine. Data confirm that Uriscreen is easy to use and can be effectively used by consumers with no training or instructions.
Diatech Diagnostics, Inc. confirm that any/all data provided in this submission may be released upon request.
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Image /page/6/Picture/2 description: The image shows the address for the Food and Drug Administration. The address is 2098 Gaither Road, Rockville MD 20850. The text is black and the background is white. The text is left-aligned.
OCT 7 1998
Diatech Diagnostics, Inc. c/o Fran White Regulatory Consultant MDC Associates 15 Oak Street Beverly Farms, MA 01915
Re: K981084
Trade Name: Uriscreen - A Rapid Screen for Catalase Regulatory Class: I Product Code: JXA Dated: September 1, 1998 Received: September 2, 1998
Dear Ms. White:
We have reviewed your Section 510(k) notification of intent to market the device referenced above and we have determined the device is substantially equivalent (for the indications for use stated in the enclosure) to 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 (Act). You may, therefore, market the device, subject to the general controls provisions of the Act. 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.
If your device is classified (see above) into either class II (Special Controls) or class III (Premarket Approval), it may be subject to such additional controls. Existing major regulations affecting your device can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. A substantially equivalent determination assumes compliance with the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (21 CFR Part 820) and that, through periodic OS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulatory action. In addition, FDA may publish further announcements concerning your device in the Federal Register. Please note: this response to your premarket notification submission does not affect any obligation you might have under sections 531 through 542 of the Act for devices under the Electronic Product Radiation Control provisions, or other Federal laws or regulations.
7
Page 2
Under the Clinical Laboratory Improvement Amendments of 1988 (CLIA-88), this device may require a CLIA complexity categorization. To determine if it does, you should contact the Centers for Disease Control and Prevention (CDC) at (770)488-7655.
This letter will allow you to begin marketing your device as described in your 510(k) premarket notification. The FDA finding of substantial equivalence of your device to a legally marketed predicate device results in a classification for your device and thus, permits your device to proceed to the market.
If you desire specific advice for your device on our labeling regulation (21 CFR Part 801 and additionally 809.10 for in vitro diagnostic devices), please contact the Office of Compliance at (301) 594-4588. Additionally, for questions on the promotion and advertising of your device, please contact the Office of Compliance at (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21 CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small Manufacturers Assistance at its toll free number (800) 638-2041 or at (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsmamain.html"
Sincerely yours,
Steven Butman
Steven I. Gutman, M.D., M.B.A. Director Division of Clinical Laboratory Devices Office of Device Evaluation Center for Devices and Radiological Health -------
Enclosure
8
510(k) Submission Uriscreen™ Diatech Diagnostics, Inc. K981084 Addendum 2 8-31-98
Page 4 of 4
Statement Indication of Use
510(k) Number: K981084 Uriscreen - a rapid screen for catalase. Device Name:
Indication for Use:
Uriscreen is a non-quantitative rapid screen, which detects catalase. Urinary catalase may be associated with White Blood Cells, bacteria and other cells, some of which may be indicators of urinary tract infection. Only Adults should use the test.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED) Concurrence of CDRH, Office of Device Evaluation (ODE)
Woody Dubois
(Division Sign-Off)
Division of Clinical Laboratory Devices
510(k) Number K981084
J Prescription Use (Per 21 CFR 801.109)
OR
Image /page/8/Picture/11 description: The image shows the text "Over-The-Counter Use" in bold font, followed by the text "(Optional Format 1-2-96)" in a smaller font size. To the left of the text is a symbol that looks like a square with an X through it. The text and symbol appear to be part of a label or instruction.
CONFIDENTIAL