title: Experience with a commerical radioassay for vitamin B12.
mesh_terms: D000368:Aged; D000410:Alanine Transaminase / Q000097:blood; D000469:Alkaline Phosphatase / Q000097:blood; D000704:Analysis of Variance; D000740:Anemia / Q000097:blood; D001219:Aspartate Aminotransferases / Q000097:blood; D001681:Biological Assay; D004355:Drug Stability; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D007501:Iron / Q000097:blood; D007553:Isotope Labeling; D007778:Lactobacillus / Q000187:drug effects; D008297:Male; D008722:Methods; D008875:Middle Aged; D013997:Time Factors; D014805:Vitamin B 12 / Q000097:blood* / Q000494:pharmacology; D014806:Vitamin B 12 Deficiency / Q000097:blood / Q000175:diagnosis*
chemical_list: D007501:Iron; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D000469:Alkaline Phosphatase; D014805:Vitamin B 12