(35 days)
HiChem Cholesterol Reagent is intended for the quantitative determination of total cholesterol in serum and plasma for the diagnosis and treatment of disorders involving excess cholesterol in the blood and lipid and lipoprotein metabolism disorders.
The HiChem Cholesterol Reagent determines cholesterol through the enzymatic action of cholesterol esterase, cholesterol oxidase and peroxidase. The resulting increase in absorbance at one of interested estable concessed on concentration in the sample.
Here's an analysis of the acceptance criteria and the studies performed for the HiChem Cholesterol Reagent, based on the provided text.
1. Table of Acceptance Criteria and Reported Device Performance
The document describes two scenarios: the HiChem Cholesterol Reagent as a manual procedure and the HiChem Cholesterol Reagent used as a secondary reagent on Beckman® SYNCHRON CX® Systems. The acceptance criteria are largely implied by the reported performance figures, as specific pre-defined thresholds aren't explicitly stated as "acceptance criteria." However, the comparisons to the predicate device and specified ranges (e.g., linearity) serve as the de facto criteria.
Scenario 1: HiChem Cholesterol Reagent (Manual Procedure)
| Metric | Acceptance Criteria (Implied) | Reported Device Performance |
|---|---|---|
| Linearity | Performance should be linear from 5 mg/dL to 750 mg/dL. | Linear from 5 mg/dL to 750 mg/dL. Regression: (HiChem Recoveries) = 3.7 mg/dL + 0.975 × (Standard Factors), r² = 1.000 Sv.x = 4.11 mg/dL. df = 11 |
| Precision (Within-run) | Not explicitly stated, but expected to be low for control sera. | Serum control 1 (109 mg/dL): 0.85 mg/dL Serum control 2 (226 mg/dL): 1.46 mg/dL Serum control 3 (501 mg/dL): 3.12 mg/dL |
| Precision (Total) | Not explicitly stated, but expected to be low for control sera. | Serum control 1 (109 mg/dL): 0.92 mg/dL Serum control 2 (226 mg/dL): 1.90 mg/dL Serum control 3 (501 mg/dL): 4.47 mg/dL |
| Method Comparison | Results should be equivalent to the Beckman® Cholesterol Reagent. | (HiChem Results) = 12 mg/dL + 0.957 × (Beckman® Results) r² = 0.966 S(y.x) = 8.1 |
| Anticoagulant Interference | Bias due to additives should be minimal. | Bias < 2.5 mg/dL cholesterol. |
| Detection Limit | Claimed limit of 5 mg/dL should be met or exceeded. | Observed detection limit: 3.2 mg/dL (below claimed 5 mg/dL). |
Scenario 2: HiChem Cholesterol Reagent on Beckman® SYNCHRON CX® Systems
| Metric | Acceptance Criteria (Implied) | Reported Device Performance |
|---|---|---|
| Linearity | Performance should be linear from 5 mg/dL to 750 mg/dL. | Linear from 5 mg/dL to 750 mg/dL. Regression: (HiChem Recoveries) = -1.0 mg/dL + 0.964 × (Standard Factors), sv.x = 8.9 ma/dL. df = 11 |
| Precision (Within-run) | Not explicitly stated, but expected to be low for control sera. | Serum control 1 (105 mg/dL): 1.8 mg/dL Serum control 2 (217 mg/dL): 1.2 mg/dL Serum control 3 (504 mg/dL): 2.8 mg/dL |
| Precision (Total) | Not explicitly stated, but expected to be low for control sera. | Serum control 1 (105 mg/dL): 1.4 mg/dL Serum control 2 (217 mg/dL): 2.5 mg/dL Serum control 3 (504 mg/dL): 2.5 mg/dL |
| Method Comparison | Results should be equivalent to the Beckman® CHOL Reagents. | (HiChem Results) = -3.6 mg/dL + 0.993 x (Beckman® Results) r² = 0.983 S(y.x) = 6.1 |
| Anticoagulant Interference | Bias due to additives should be minimal. | Bias < 1 mg/dL cholesterol and statistically insignificant. |
| Detection Limit | Claimed limit of 5 mg/dL should be met or exceeded. | Observed detection limit: 2.7 mg/dL (below claimed 5 mg/dL). |
| Calibration Stability | Changes in recoveries over 14 days < 2.6% (and < 3% manufacturer's precision claim). | Changes < 2.6% over 14 days. |
| Reagent Stability | Changes in recoveries over 30 days < 2.6% (and < 3% manufacturer's precision claim). | Changes < 2.6% over 30 days. |
2. Sample Size Used for the Test Set and Data Provenance
-
Manual Procedure Test Set:
- Linearity Standards: 12 points (df=11, representing n=12 measurements or independent standards).
- Precision Control Sera:
- Serum control 1: n = 29 replicates
- Serum control 2: n = 30 replicates
- Serum control 3: n = 30 replicates
- Method Comparison (Serum/Plasma): 113 mixed serum and plasma specimens.
- Anticoagulant Interference: Spiked and unspiked serum pools (number not specified).
- Detection Limit: Repetitive assay of a cholesterol standard (number of replicates not specified, but sufficient to calculate 3 standard deviations).
-
Beckman® SYNCHRON CX® Systems Test Set:
- Linearity Standards: 12 points (df=11, representing n=12 measurements or independent standards).
- Precision Control Sera:
- Serum control 1: n = 60 replicates
- Serum control 2: n = 60 replicates
- Serum control 3: n = 60 replicates
- Method Comparison (Serum/Plasma): 154 mixed serum and plasma specimens.
- Anticoagulant Interference: Spiked and unspiked serum pools (number not specified).
- Detection Limit: 30 replicate study of a cholesterol standard.
- Stability Studies: Serum controls assayed over claimed periods (number of controls and frequency not specified).
-
Data Provenance: Not explicitly stated (e.g., country of origin). The studies appear to be prospective as they are designed experiments to test the performance of the HiChem reagent under controlled conditions, rather than analysis of pre-existing clinical data.
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts
This type of information is not applicable to this device. The HiChem Cholesterol Reagent is an in vitro diagnostic (IVD) reagent intended for quantitative determination of a chemical analyte (cholesterol). The "ground truth" for linearity, precision, and agreement with a predicate device is established through:
- Controlled standards with known concentrations.
- Reference methods or predicate devices (Beckman® SYNCHRON® Systems Cholesterol Reagent).
- Statistical analysis of repeated measurements.
There are no human experts "establishing ground truth" in the way one might for image analysis or disease diagnosis.
4. Adjudication Method for the Test Set
Not applicable. As noted above, the assessment involves comparing numerical results to established standards or a predicate device, not subjective interpretation requiring adjudication among experts.
5. If a Multi Reader Multi Case (MRMC) Comparative Effectiveness Study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance
Not applicable. This device is an IVD reagent, not an AI-assisted diagnostic tool that would involve human readers interpreting results.
6. If a standalone (i.e., algorithm only without human-in-the-loop performance) was done
The studies conducted for the HiChem Cholesterol Reagent can be considered standalone in the sense that they evaluate the performance of the reagent (and the associated analytical system) without human interpretation of the results to establish a diagnosis. The "human-in-the-loop" aspect here is the laboratory technician performing the test or operating the analyzer, but their role is instrumental, not interpretive in establishing the final quantitative value. The performance metrics (linearity, precision, correlation) are direct outputs of the device system.
7. The Type of Ground Truth Used
The ground truth used in these studies consists of:
- Known concentrations of linearity standards: For linearity studies.
- Reference measurements from the predicate device (Beckman® SYNCHRON® Systems Cholesterol Reagent): For method comparison studies.
- Expected values of commercially available control sera: For precision and stability studies.
- Spiked samples with known additive concentrations: For anticoagulant interference studies.
- Statistical determination from repeated measurements: For detection limit.
8. The Sample Size for the Training Set
Not applicable. This device is a chemical reagent and an enzymatic assay, not a machine learning model. Therefore, there is no "training set" in the context of AI or algorithm development. The performance characteristics are inherent to the chemical reactions and analytical methods.
9. How the Ground Truth for the Training Set Was Established
Not applicable (as it's not an AI/ML device). If considering the development and optimization of the reagent itself, the "ground truth" for developing the formulation would have been established through iterative biochemical testing and optimization against known cholesterol standards and samples, similar to how the performance is validated.
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Image /page/0/Picture/1 description: The image shows the logo for HiChem Diagnostics. The logo features a black circle at the top, followed by the words "HiChem" in large, bold letters. Below "HiChem" is the word "DIAGNOSTICS" in smaller letters. To the right of the black circle are the words "Smart Solutions" in a smaller, italicized font.
SUMMARY OF 510(K) SAFETY AND EFFECTIVENESS INFORMATION
This summary of 510(k) safely and effectiveness information is being submitted in accordance with the requirements of
SMDA 1990 and 21 CFF 807 ee SMDA 1990 and 21 CFR 807.92.
HiChem Cholesterol Reagent is intended for the quantitative determination of total cholesterol in serum and plasma. Measurements of total checked are used in the diagnosis and treatment of the choisecon in series cholesters in the blood and lipid and lipoprotein metabolism disorders.
The HiChem Cholesterol Reagent determines cholesterol through the enzymatic action of cholesterol esterase, cholesterol oxidase and peroxidase. The resulting increase in absorbance at one of interested estable concessed on concentration in the sample.
The HiChem Cholesterol Reagent is an adaptation of the method first described by Allain and is intended for use with manual spectrophotometers or clinical analyzers which can automate the required manipulations.
The HiChem Cholesterol Reagent is substantially equivalent to the Beckman® SYNCHRON® Systems Cholesterol Reagent, product no. 467825, manufactured by Beckman® Instruments, Brea, CA. All three reagents support the same intended use and produce equivalent results with the same clinical products support ne same mended on the same methodology which determines total cholesterol through the enzymatic action of the are and cholesterol oxidase.
The effectiveness of the manual procedure is shown by the recovery of linearity standards, the precision of control recoveries, the comparison of serum and plasma recoveries to the Beckman® Cholesterol Reagent and the validation of the chemical additives and sensitivity claims.
The recovery of total cholesterol using HiChem Cholesterol Reagent as a manual procedure is linear from 5 mg/dL to 750 mg/dL as shown by the recovery of linearity standards which procure is incearing in including in thigh comparing mean standard recoveries which the open the find failure into handles,
shown below shown below.
(HiChem Recoveries) = 3.7 mg/dL + 0.975 × (Standard Factors), r2 = 1.000 Sv.x = 4.11 mg/dL. df = 11
Precision, demonstrated by replicate assay of commercially available control sera, is shown below.
| Specimen | n | mean | within-run SD | total SD |
|---|---|---|---|---|
| Serum control 1 | 29 | 109 mg/dL | 0.85 mg/dL | 0.92 mg/dL |
| Serum control 2 | 30 | 226 mg/dL | 1.46 mg/dL | 1.90 mg/dL |
| Serum control 2 | 30 | 501 mg/dL | 3.12 mg/dL | 4.47 mg/dL |
Cholesterol recoveries of 113 mixed serum and plasma specimens are compared between the HiChem manual procedure and the Beckman® Cholesterol Read on the Synchron CX® Systems. Least squares regression statistics are shown below.
Serum/ Plasma Comparisons:
(HiChem Results) = 12 mg/dL + 0.957 × (Beckman® Results) r2 = 0.966 S(v.x) = 8.1
The use of the anticoagulants EDTA, citrate, oxalate, fluoride and heparin are shown to be acceptable chemical additives by comparison of spiked and unspiked serum pols. In all cases produced by the additive were less than 2.5 mg/dL cholesterol.
The detection limit claim of 5 mg/dL is documented through the repetitive assay of a cholesterol standard. The observed detection limit, calculated as three standard deviations of a crowsition study, is 3.2 mg/dL and is below the claimed limit.
231 North Puente Street, Brea, California 92821 • (800) 733-4424 • (714) 871-8360 • FAX (714) 871-2439
510(k) Notification, HiChem Cholesterol Reagent Kit, p 74
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The effectiveness of the HiChem secondary reagent application for the Beckman® SYNCHRON CX® Systems is shown by ilie recovery of linearity standards, the precision of control recovery of serum controls over both the calibration stability and on-board stability claims, the validation of the chemical additives and the comparison of patient specimen recoveries to the Beckman® SYNCHRON® Systems Cholesterol Reagent.
The recovery of total cholesterol using the HiChem Cholesterol Reagent on the SYNCHRON CX® Systems is linear from 5 mg/dL to 750 mg/dL as shown by the recovery of linearity standards which span the claimed linear range. Regression statistics, comparing mean standard recoveries which open in oldniver in than it in really.
In 010 to 918, are shown below.
(HiChem Recoveries) = -1.0 mg/dL + 0.964 × (Standard Factors), sv.x = 8.9 ma/dL. df = 11
Precision, demonstrated by replicate assay of urine pools and commercially available control sera, is shown below.
| Specimen | n | mean | within-run SD | total SD |
|---|---|---|---|---|
| Serum control 1 | 60 | 105 mg/dL | 1.8 mg/dL | 1.4 mg/dL |
| Serum control 2 | 60 | 217 mg/dL | 1.2 mg/dL | 2.5 mg/dL |
| Serum control 3 | 60 | 504 mg/dL | 2.8 mg/dL | 2.5 mg/dL |
Cholesterol recoveries of 154 mixed serum and plasma specimens are compared between the HiChem and Beckman® CHOL Reagents on the SYNCHRON CX® Systems. Least squares regression statistics are shown below.
Serum/ Plasma Comparisons:
(HiChem Results) = -3.6 mg/dL + 0.993 x (Beckman® Results) r2 = 0.983 S(y.x) = 6.1
The use of the anticoagulants EDTA, citrate, oxalate, fluoride and heparin are shown to be acceptable chemical additives by comparison of spiked and unspiked serum pools. In all cases, the bias due to the addition of anticoagulants is less than 1 mg/dL cholesterol and statistically insignificant.
The detection limit claim of 5 mg/dL is documented through the repetitive assay of a cholesterol standard. The observed detection limit, calculated as three standard deviations of a 30 replicate study, is 2.7 mg/dL and is below the claimed limit.
The 14 day onboard calibration stability and the 30 day on board reagent stability claims are documented through the assay of serum controls over the claimed periods. In all cases, the changes in cholesterd recoveries over the test periods are lesse than 2.6% and less than the manufacturer's 3% within run precision claim for the SYNCHRON® Analyzer,
The HiChem Cholesterol Reagent is substantially equivalent to the Beckman® SYNCHRON® Systems Cholesterol Reagent, product no. 467825, manufactured by Beckman® Instruments, Brea, CA.
Wynn Starking
Stocking Manager of Regulatory Affairs HiChem Diagnostics
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Image /page/2/Picture/1 description: The image shows the seal of the Department of Health & Human Services USA. The seal is circular and contains the words "DEPARTMENT OF HEALTH & HUMAN SERVICES • USA" around the perimeter. In the center of the seal is a stylized image of a caduceus, a symbol of medicine, with a staff and two snakes.
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
AUG / 9 1998
Wynn Stocking · Manager, Regulatory Affairs HiChem Diagnostics 231 North Puente Street
Brea, California 92821
Re : K982469 HiChem Cholesterol Reagent Regulatory Class: I Product Code: СНН Dated: July 14, 1998 Received: July 15, 1998
Dear Mr. Stocking:
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 (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, listing, 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 Requlations, Title 21, Parts 800 to 895. प्र substantially equip rate ar, fares out co 895. A the Current Good Manufacturing Practice requirements, as set forth in the Quality System Regulation (QS) for Medical Devices: General regulation (Q5) Tor Medical
through poriodic of through periodic QS inspections, the Food and Drug Administration (FDA) will verify such assumptions. Failure to comply with the GMP regulation may result in regulations. Fran 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 requlations.
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Page 2
Under the Clinical Laboratory Improvement Amendments of 1988
(CDIA-88), this device may require a CLTA complexity (CLA-88), this device may require a CLIA complexits
categorization. To determine if it device a CLIA complexity can been for Disease Control if it does, your should contacts of 1988
the Centers for Disease Control if it does, your should contact
(770), 199 assesse Control and Preventio the Centers for Disease Control if it does, you should con
the Centers for Disease Control and Prevention (CDC) at
This letter will allow you to begin marketing your device as
described in your 510 (k) premarket notification with described in your 510(k) premarket notification. The FDA first of substantial equivalence of your divine to a FDA
manketed predicate device of your device to a legally marketed predicate device results in a classification a legally
device and thus, permits your device to research and the provi the was producate device results in a classification for your device to proceed to the market.
If you desire specific advice for your device on our exceller
regulation (21 CFR Part 801 and additionally 000 consequence of regulation (21 CFR Part 801 and additionally 809.10 for in vice diagnostic devices), please contact the 0ffice of the promotion and advertising of vour devices of and first on the promotion and advertising of your device, pleases of the regulation entitled, "Misbranding of your device, contact on the regulation entitled, "Misbranding by reference to the resolution of the resolution of the resolution of the resolution of the research besto
che information on your respo info a noonroad.com™ (21 CR 807.97). Other general
obtained from the Division of Small Morefore of the more of your responsibilities under - end generati
obtained from the Division of Small Manufacthe Armay Barance at its toll-free number (800) 638-2041 or (301) 443-6597 or at 11 11 0001 116e number (800) 638-2041 or (301) 443-6597 01 at
its internet address "http://www.fda.gov/cdch/dsmanain.html".
Sincerely yours,
Steven Litman
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
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Page 1 of 1
510(k) Number (if known):
Device Name:
HiChem Cholesterol Reagent Kit .
Indications For Use:
HiChem Cholesterol Reagent is intended for the quantitative determination of total cholesterol in serum and plasma for the diagnosis and treatment of disorders involving excess cholesterol in the blood and lipid and lipoprotein metabolism disorders.
This reagent is intended to be used in a professional setting or by trained personnel and is not intended for home use. .:-
Respectfully.
Wym Stocking
Wynd Stocking
Regulatory Affairs Manager HiChem Diagnostics
6 August, 1998
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
(Division Sign-Off)
Division of Clinical Laboratory Devices 510(k) Number
Prescription Use (Per 21 CFR 801. 109) OR
Over-The-Counter Use _
(Optional Format 1-2-96)
§ 862.1175 Cholesterol (total) test system.
(a)
Identification. A cholesterol (total) test system is a device intended to measure cholesterol in plasma and serum. Cholesterol measurements are used in the diagnosis and treatment of disorders involving excess cholesterol in the blood and lipid and lipoprotein metabolism disorders.(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 § 862.9.