(62 days)
The ATAC PAK CPK Reagent Kit and the ATAC 8000 Random Access Chemistry System are intended for use as a system for the quantitative determination of creatine kinase in serum and plasma. Creatine Kinase measurements are used in the diagnosis and treatment of myocardial infarction and muscle diseases such as progressive, Duchenne-type muscular dystrophy. This reagent is intended to be used by trained personnel in a professional setting and is not intended for home use.
The ATAC PAK CPK Reagent Kit and the ATAC 8000 Random Access Chemistry System are intended for use as a system for the quantitative determination of creatine kinase in serum and plasma. Creatine kinase results are used in the diagnosis and treatment of myocardial infarction and muscle diseases such as progressive, Duchenne-type muscular dystrophy. The ATAC PAK CPK Reagent determines creatine kinase activity in the sample by measuring the rate of increase in absorbance at approximately 340 nm, which is proportional to the rate of progression of NAD to NADH.
Here's an analysis of the provided text to extract the acceptance criteria and study details for the ATAC PAK CPK Reagent Kit:
Device: ATAC PAK CPK Reagent Kit
1. Table of Acceptance Criteria and Reported Device Performance
| Acceptance Criteria Category | Specific Criteria | Reported Device Performance | Comments |
|---|---|---|---|
| Linearity/Recovery | Linear from 4 to 1,600 U/L | Range: 0 - 1,635 U/L, sy.x = 13.8 U/L, r² = 0.999 | Meets (exceeds) criteria |
| Hyperactive Range: 1,400 to 5,200 U/L | Range: 1,317 - 3,212 U/L, sy.x = 28.3 U/L | Meets the general criteria of a hyperactive range, though the reported range is narrower than what the criteria implies for the "standard dilution factors." | |
| Lower Limit of Detection | The lower limit of the linear range (4 U/L) | 1.2 U/L (documented through repetitive assay of a diluted serum control, within run precision study) | Meets (exceeds) criteria: 1.2 U/L is below the claimed 4 U/L limit. |
| Precision (Normal Range) | Not explicitly stated with numerical targets, but implied by "Precision statistics, calculated analogous to the method described in NCCLS Guideline EP3-T" | Serum 1 (mean 46 U/L): Within Run 1SD = 0.7 (1.5%CV), Total 1SD = 1.4 (3.0%CV) | Performance demonstrated. |
| Serum 2 (mean 556 U/L): Within Run 1SD = 5.8 (1.0%CV), Total 1SD = 16.2 (2.9%CV) | Performance demonstrated. | ||
| Serum 3 (mean 1177 U/L): Within Run 1SD = 11.9 (1.0%CV), Total 1SD = 33.3 (2.8%CV) | Performance demonstrated. | ||
| Precision (Hyperactive Dilutions) | Not explicitly stated with numerical targets, but implied by "Precision statistics, calculated analogous to the method described in NCCLS Guideline EP3-T" | Serum 1 (mean 2202 U/L): Within Run 1SD = 19 (0.9%CV), Total 1SD = 45 (2.1%CV) | Performance demonstrated. |
| Serum 2 (mean 2636 U/L): Within Run 1SD = 29 (1.1%CV), Total 1SD = 57 (2.2%CV) | Performance demonstrated. | ||
| Method Comparison | Not explicitly stated with numerical targets, but implied by comparison to a "commercially available method." | Bias = -6 U/L, Slope = 1.012, n = 232, range = 4 - 1176 U/L, r = 0.999 | Performance demonstrated. |
| Reagent Stability | Deviations in results over 30 days are less than the greater of 3 U/L or 3% for both primary and hyperactive ranges. | "deviations... over the test period are less than the greater of 3 U/L or 3% for both the primary usable range and the extended hyperactive dilution range." | Meets criteria. |
2. Sample Size Used for the Test Set and Data Provenance
- Linearity/Recovery:
- Primary Usable Range: df = 69 (likely corresponds to 70 data points).
- Hyperactive Usable Range: df = 39 (likely corresponds to 40 data points).
- Lower Limit of Detection: Not explicitly stated, but involved "repetitive assay of a diluted serum control."
- Precision:
- Normal Range: n = 60 for each of the three serum samples.
- Hyperactive Dilutions: n = 70 for Serum 1, n = 72 for Serum 2.
- Method Comparison: n = 232 specimens.
- Data Provenance: "Mixed serum and plasma specimens, collected from adult patients." (Country of origin not specified, prospective or retrospective not explicitly stated but implies prospective collection for the comparison study).
- Reagent Stability: Not explicitly stated, but involved "assay of serum controls over the claimed period."
3. Number of Experts Used to Establish the Ground Truth for the Test Set and Qualifications of Those Experts
The device being a reagent kit for quantitative determination of creatine kinase, the "ground truth" is typically established by reference methods or validated laboratory measurements, not by expert interpretation in the way it might apply to imaging or diagnostic algorithms. There is no mention of human experts establishing ground truth for the test set in the context of interpretation. Instead, other reference methods and statistical validation methods are used to establish performance.
4. Adjudication Method for the Test Set
Not applicable. For quantitative chemical assays, ground truth is established by a reference method or known concentrations, not through a human adjudication process.
5. If a Multi Reader Multi Case (MRMC) Comparative Effectiveness Study Was Done
No, an MRMC comparative effectiveness study was not done. This type of study is typically relevant for interpretative diagnostic devices where human readers (e.g., radiologists) are involved in assessing cases. This submission is for a quantitative chemical assay.
6. If a Standalone (i.e. Algorithm Only Without Human-in-the-Loop Performance) Was Done
Yes, the studies reported are for the standalone performance of the ATAC PAK CPK Reagent Kit combined with the ATAC 8000 Random Access Chemistry System. It measures creatine kinase levels directly and objectively.
7. The Type of Ground Truth Used
- For Linearity/Recovery: Known standard dilutions with defined concentrations of creatine kinase.
- For Lower Limit of Detection: Known low-concentration serum control.
- For Precision: Commercially available serum controls with target mean values.
- For Method Comparison: A "commercially available method" (presumably a predicate or established laboratory method) was used to assay the same patient specimens, and its results served as the reference for comparison.
- For Reagent Stability: Values from serum controls measured over time are compared against initial values or acceptable analytical variations.
8. The Sample Size for the Training Set
Not explicitly stated. For a reagent kit, "training set" doesn't apply in the same way as for an AI algorithm. Method validation studies typically establish performance characteristics rather than "train" the assay. The manufacturing process and quality control would ensure consistency.
9. How the Ground Truth for the Training Set Was Established
Not applicable in the AI/algorithm sense. The performance characteristics (linearity, precision, stability, method comparison) are established through detailed analytical studies using known standards, controls, and patient samples compared to predicate devices/methods. The "ground truth" for these analytical methods is based on established chemical principles and metrological traceability.
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OCT - 3 2001
élan diagnostics
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SUMMARY OF 510(K) SAFETY AND EFFECTIVENESS INFORMATION
This summary of 510(k) safety and effectiveness information is being submitted in accordance with the requirements of SMDA 1990 and 21 CFR 807.92.
SMDA 1970 and 21 CF C 800722
The ATAC PAK CPK Reagent Kit and the ATAC 8000 Random Access Chemiser Jones in the disamosis The ATAC PAK CPA Reagelli Kirano in serum and plasma. Creatine kinas essults are used in the diagnosis. The diagnosi for the quantitiative delemination of creatine thise in sorain as progressive, Duchenne-sype muscular dystrophy. The secultive The secultive and treatment of myocardial intarction and muscle cliseases adolt as progression of NAD to NADH. The Pressulting rate ATAC PAK CPK Reagent delemines creatine shalled the creatine kinase activity in the sample. The ATAC
of increase in absorbance at approximately 340 nm is proportional to the of increase in absorbance at approximately 3-6 inn is properation in the Kinase Reagent Kit, product no. 442635, marketed by Beckman Coulter, Inc. of Brea, CA.
marked of Dookinal. Council Kit and the ATAC 8000 Random Access Chemistry System is shown by the following studies.
The recovery of creatine kinase using the ATAC PAK CPK Reagent is linear from 4 to 1,600 U/L in the primary useded The recovery of creatine knase using the ATAC FAS CLA Now thour hour hos cover of linearity standards which fange and from 1,400 to 5,200 Off in the mypelacer o and in of the both ranges, and the standard error of span the respective ranges. The coentifiation (1 7 appeacher 10 to Contraction statistics, which compare standard recoveries to standard dilution factors in both ranges, are shown below.
Primary Usable Range sy.x = 13.8 U/L, df = 69 range = 0 - 1,635 U/L, r2 = 0.999. Hyperactive Usable Range
range = 1,317 - 3,212 U/L, sy.x = 28.3 U/L, The lower limit of the linear range (4 U/L) is documented through the repetitive assay of a diluted serum control. The
The lower imm of the mean anye (4 OL) is documented through the reporters within un precision study, is 1.2 U/L and is below the claimed limit. book the normal sample volume and the reduced sample volume with hyperactive dilution, is also mothed
df = 39
by the replicate assay of commercially available serum controls. Precision statistics, calculated analogous to the method described in NCCLS Guideline EP3-T, are shown below.
| Sample | n | mean | Within Run | Total | ||
|---|---|---|---|---|---|---|
| 1SD | %CV | 1SD | %CV | |||
| Serum 1 | 60 | 46 | 0.7 | 1.5% | 1.4 | 3.0% |
| Serum 2 | 60 | 556 | 5.8 | 1.0% | 16.2 | 2.9% |
| Serum 3 | 60 | 1177 | 11.9 | 1.0% | 33.3 | 2.8% |
| Precision of Creatine Kinase Recoveries in U/L using Hyperactive Dilutions | |||
|---|---|---|---|
| Sample | n | mean | Within Run | Total | ||
|---|---|---|---|---|---|---|
| 1SD | %CV | 1SD | %CV | |||
| Serum 1 | 70 | 2202 | 19 | 0.9% | 45 | 2.1% |
| Serum 2 | 72 | 2636 | 29 | 1.1% | 57 | 2.2% |
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Mixed serum and plasma specimens, collected from adult patients, were assayed for creatine kinase at 37°C using the ATAC 1000 Random Access Chemissry System and another commercially available method. Results were compared by least squares linear regression and the following statistics were obtained.
ATAC 8000 = -6 U/L + 1.012 x Competitive Reagent n = 232 range = 4 - 1176 U/L r = 0.999
The 30 day on board reagent stability claim is documented through the assay of serum controls over the claimed period. In I ho 50 ag on board reagon bacting bann to other in subjective over the test period are less than the greater of 3 U/L or 3% for both the primary usable range and the extended hyperactive dilution range.
Wynn Stork
er of Regulatory Affairs Elan Diagnostics
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Image /page/2/Picture/1 description: The image is a seal for the Department of Health & Human Services (HHS). 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 caduceus, which is a symbol of medicine and health.
Food and Drug Administration 2098 Gaither Road Rockville MD 20850
OCT - 3 2001
Mr. Wynn Stocking Manager, Regulatory Affairs Elan Diagnostics 1075 W. Lambert Road Brea. CA 92821
K012474 Re: Trade/Device Name: ATAC PAK CPK Reagent Regulation Number: 21 CFR 862.1215 Regulation Name: Creatine phosphokinase/creatine kinase or isoenzymes test system Regulatory Class: Class II Product Code: CGS Dated: July 31, 2001 Received: August 2, 2001
Dear Mr. Stocking:
We have reviewed your Section 510(k) premarket notification of intent to market the device we nave roviewed your betermined the device is substantially equivalent (for the indications for use stated in the enclosure) to legally marketed predicate devices marketed in interstate for use sunce in the encreases)76, the enactment date of the Medical Device Amendments, or to conninered prof to May 20, 1978, are case and the provisions of the Federal Food, Drug, and Cosmetic Act (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. The I vou may, dicrerere, mains 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 (PMA), it If your device is exassino (tional 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.
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 or any I call the Act's requirements, including, but not limited to: registration and listing (21 CFR Part 807); labeling (21 CFR Part 801); good manufacturing practice requirements as set forth in the quality systems (QS) regulation (21 CFR Part 820); and if applicable, the electronic form in the quality by bections (Sections 531-542 of the Act); 21 CFR 1000-1050.
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Page 2 -
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 noutheation. The I Dr I inamily ssification 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 1 IT you desire spoonly arriver diagnostic devices), please contact the Office of Compliance at additionally 607.10 for in millionally, for questions on the promotion and advertising of your device, (301) 594-4566. Traditional (301) 594-4639. Also, please note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 807.97). Other general information on your responsibilities under the Act may be obtained from the Division of Small monthanon on your respond and Consumer Assistance at its toll-free number (800) 638-2041 or (301) 443-6597 or at its internet address "http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours,
Steven Sutman
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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510(k) Number (if known):
KO12474
Device Name:
ATAC PAK CPK Reagent
Indications For Use:
The ATAC PAK CPK Reagent Kit and the ATAC 8000 Random Access Chemistry System are intended for use as a system The ATAC FAK CFX Reagent Kirane HTFC 5000 Ramond Plasma. Creatine Kinase measurements are used in the for the qualitiative determination of creating in order and progressive, Duchenne-type muscular dystrophy.
This reagent is intended to be used by trained personnel in a professional setting and is not intended for home use.
Respectfully,
Wynn Stocking
Wym Stocking Regulatory Affairs Manager Elan Diagnostics
31 July, 2001
(PLEASE DO NOT WRITE BELOW THIS LINE-CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Kesia Alexander for Joan Cuper
(Division Sign-Off)
Division of Clinical Laboratory Devices
Division of Clinical Laboratory Devices
510(k) Number K012474
Prescription Use
(Per 21 CFR 801.109)
OR
Over-The-Counter Use __
(Optional Format 1-2-96)
§ 862.1215 Creatine phosphokinase/creatine kinase or isoenzymes test system.
(a)
Identification. A creatine phosphokinase/creatine kinase or isoenzymes test system is a device intended to measure the activity of the enzyme creatine phosphokinase or its isoenzymes (a group of enzymes with similar biological activity) in plasma and serum. Measurements of creatine phosphokinase and its isoenzymes are used in the diagnosis and treatment of myocardial infarction and muscle diseases such as progressive, Duchenne-type muscular dystrophy.(b)
Classification. Class II.