P. Hajdusich

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We evaluated the effect of hemolysis, icteric discoloration, lipemia, paraproteinemia, and uremia on enzymatic methods for determining sodium, potassium, and chloride, according to the National Committee for Clinical Laboratory Standards EP7-P proposals for testing interference from endogenous substances. The sodium, potassium, and chloride assays (reagent(More)
We examined sera from six different groups of patients for CK-MB activity by means of two commercially available tests, an immunoinhibition method (E. Merck) and the CK-MB test as used with the aca (Du Pont). In the first group of patients (suspicion of myocardial infarction) the correlation between the two methods was good: r = 0.9191, y = 1.068x -- 0.888,(More)
To estimate the incidence of variant creatine kinase (CK)isoenzymes, 1,191 unselected patients were screened by means of CK:CK - MB ratio. When CK - MB was higher than 20% of the total CK in the immunoinhibition test, and a myocardial infarction could be excluded, a CK-isoenzyme electrophoresis was performed. We found macro-CK-BB-emia in 13 patients, but(More)
To estimate the incidence of variant creatine kinase (CK)isoenzymes, 1,191 unselected patients were screened by means the of CK:CK-MB ratio. When CK-MB was higher than 20% of the total CK in the immunoinhibition test, and a myocardial infarction could be excluded, a CK-isoenzyme electrophoresis was performed. We found macro-CK-BB-emia in 13 patients, but(More)
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