title: Errors in measuring enzyme activity by reaction-rate methods.
abstract: 1. The two types of assay used in clinical enzymology -- reaction-rate and two-point assays -- are usually performed with different types of analyzers. A third type, the multi-point analyzer, has been introduced recently. 2. Reaction-rate and two-point enzyme assays have sources of error inherent in their methodologies. There are also major errors due to the analytical system itself; these are considered systematically.
mesh_terms: D001322:Autoanalysis; D004798:Enzymes / Q000378:metabolism*; D006801:Humans; D007700:Kinetics; D008722:Methods; D011786:Quality Control; D013696:Temperature
chemical_list: D004798:Enzymes