title: Variation with age of reference values for P-cobalamins.
abstract: P-cobalamins were recorded on plasma from 279 persons (age interval 20-80 years) who participated in a population survey. The values obtained showed a decrease in the mean and a broadening of the reference interval with age. The justification of employing one reference interval, 200-650 pmol/l, is discussed.
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011159:Population Surveillance; D012016:Reference Values; D014805:Vitamin B 12 / Q000097:blood*
chemical_list: D014805:Vitamin B 12