title: Enzymatic determination of pyridoxal phosphate in plasma by decarboxylation of L-tyrosine-14 C (U) and a comparison with the tryptophan load test.
mesh_terms: D000328:Adult; D000368:Aged; D002247:Carbon Isotopes; D002648:Child; D002854:Chromatography, Paper; D004796:Clinical Enzyme Tests; D006493:Heparin / Q000494:pharmacology; D006801:Humans; D008722:Methods; D011732:Pyridoxal Phosphate / Q000097:blood*; D011736:Pyridoxine / Q000652:urine; D014364:Tryptophan; D014439:Tyramine / Q000652:urine; D014443:Tyrosine; D014445:Tyrosine Decarboxylase; D014803:Vitamin B Complex; D014977:Xanthurenates / Q000652:urine
chemical_list: D002247:Carbon Isotopes; D014977:Xanthurenates; D014803:Vitamin B Complex; D014443:Tyrosine; D011732:Pyridoxal Phosphate; D014364:Tryptophan; D006493:Heparin; D014445:Tyrosine Decarboxylase; D011736:Pyridoxine; D014439:Tyramine