CK-MB – Creatine kinase (CK) is a dimeric enzyme expressed by various tissues and cell types. In the cells,

the “cytosolic” CK enzymes consist of two subunits, which can be either B (brain type) or M (muscle

type). There are three different isoenzymes: CK-MM, CK-BB and CK-MB.

The primary source of CKMB is myocardium although it is also found in skeletal muscle. CKMB

levels increase with myocardial damage.Heart1

 CK-MB is used for the diagnosis of myocardial infarction and re-infarction.


Creatine kinase MB (CK-MB) levels can be detected within 4 to 6 hours of the onset ofmyocardial infarction, peak within 12 to 24 hours, and usually returns to baseline levelswithin 24 to 36 hours.

                                               CK-MB Serum Sample

Catalog Number SDC5171
Reagent Pack    100
Principle Automated Chemiluminescence Immunoassay(CLIA)
Sensitivity 0.625 ng/ml
Dynamic range       0.625-500 ng/ml
Sample Type Serum
Intra-assay precision  4.07%
Inter-assay precision   7.23%
Sample Volume   100 μL

In a set of survey samples using SDi CX against SIEMENS Centaur give the following correlation:

y = 0.9894x + 0.4104

R² = 0.9912

ck-mb 1