MMB METHOD
Device Facts
| Record ID | K970343 |
|---|---|
| Device Name | MMB METHOD |
| Applicant | Dade Chemistry Systems, Inc. |
| Product Code | JHY · Clinical Chemistry |
| Decision Date | Feb 14, 1997 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 862.1215 |
| Device Class | Class 2 |
Intended Use
The MMB Method for the Dimension® RxL Clinical Chemistry System with the heterogeneous immunoassay module is used to quantitatively measure CKMB in human serum and plasma.
Device Story
One-step enzyme immunoassay; sandwich principle. Input: human serum/plasma sample. Process: sample incubated with chromium dioxide particles coated with anti-CKB monoclonal antibodies and β-galactosidase-labeled anti-CKMB monoclonal antibodies; magnetic separation/washing removes unbound components; chromogenic substrate (CPRG) added; hydrolysis releases chromophore (CPR). Output: color change measured at 577 nm, proportional to CKMB concentration. Used in clinical chemistry laboratories; operated by laboratory technicians. Results used by physicians to assess CKMB levels, aiding in clinical decision-making related to cardiac status.
Clinical Evidence
Split-sample comparison of 137 clinical patient samples (range 0.2–283.4 ng/mL) between MMB Method and Abbott IMx® Stat CK-MB. Results: correlation coefficient 0.998, slope 0.845, intercept 0.496 ng/mL.
Technological Characteristics
Sandwich enzyme immunoassay; chromium dioxide particles; monoclonal antibodies; β-galactosidase label; chromogenic substrate (CPRG); colorimetric detection at 577 nm and 700 nm; magnetic separation.
Indications for Use
Indicated for the quantitative measurement of CKMB in human serum and plasma for clinical chemistry analysis.
Regulatory Classification
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.
Predicate Devices
- Abbott Laboratories IMx® Stat CK-MB
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