Revised list of abbreviations for names of enzymes of diagnostic importance.

Alcohol dehydrogenase AD L-Iditol dehydrogenase ID (a) Lactate dehydrogenase LD Hydroxybutyrate dehydrogenase HBD Malate dehydrogenase MD Isocitrate dehydrogenase (NADP+)ICD Phosphogluconate dehydrogenase (decarboxylating) PGD Glucose-6-phosphatedehydrogenaseGPD (b) Glyceraldehyde-phosphate dehydrogenase GAD (c) Glutamate dehydrogenase (NAD(P)+) GMD Glutathione reductase (NAD(P)H) GTR Catalase CTS Ornithine carbamoyltransferase OCT Transketolase TKT y-Glutamyltransferase GGT (d) Aspartate transaminase AST (e) Alanine transaminase ALTJ Pyruvate kinase PK Creatine kinase CK Adenylate kinase AK Phosphoglucomutase PGM Hexose-l-phosphate uridylyltransferase HUT (f) Triacylglycerol lipase LPS (g) Cholinesterase CHS Alkaline phosphatase ALP Acid phosphatase ACP 5'-Nucleotidase NTP s-Amylase AMS P-N-Acetylglucosaminidase AGS ,B-Glucuronidase GRS Aminopeptidase (microsomal) LAS (h) Cystyl-aminopeptidase CAS (i) Trypsin TPS Pepsin A PPS Arginase ARS Guanine deaminase GDS (j) Adenosine deaminase ADS Fructose-bisphosphate aldolase ALS (k) Carbonate dehydratase CA (1) Triosephosphate isomerase TPI Glucosephosphate isomerase GPI The publication of the new edition of Enzyme Nomenclature (Commission on Biochemical Nomenclature, 1973) contains many changes of enzyme number and recommended name. This has made it necessary to revise the list of abbreviations of clinically important enzymes (Baron, Moss, Walker, and Wilkinson, 1971). Although we have been criticized for our temerity in bringing out this list, it has been sufficiently widely used for revision to be worthwhile. We appreciate that there may be difficulties in using this list with languages other than English, where names of enzymes (particularly in the order of the words) are often different. We have taken the opportunity to make a few other changes and to correct some errors and we are grateful to all those who sent comments. For simplicity, neither numbers nor Greek letters are used in the abbreviations.