title: Distribution of serum concentrations of creatine kinase MM and BB isoenzymes measured by radioimmunoassay.
abstract: Because of the recent interest in measuring serum enzyme concentration as opposed to catalytic activity, we measured the serum concentration of creatine kinase isoenzymes BB and MM by radioimmunoassay and the total creatine kinase enzymatic activity in healthy adults. For sex-race subgroups we report mean values and the 2.5, 5, 25, 50, 75, 90, 95 and 97.5 percentiles. Differences among average values of the subgroups were highly significant. Results within subgroups frequently departed from a gaussian distribution.
mesh_terms: D044383:Black People; D003402:Creatine Kinase / Q000097:blood*; D005260:Female; D006801:Humans; D007527:Isoenzymes / Q000097:blood*; D008297:Male; D011863:Radioimmunoassay / Q000379:methods; D012737:Sex Factors; D044465:White People
chemical_list: D007527:Isoenzymes; D003402:Creatine Kinase