title: Ion exchange analysis of porphyrins in urine.
abstract: An easy and cheap analysis of total prophyrin in urine is described based on the ion exchange resin Dovex 2 X 8, 50--100 mesh. Recovery of added porphyrin varied between 65 and 90% for uro- and 70 and 95% for coproporphyrin. The use of the method with internal standard is described and exemplified. Ammoniacal solutions of crystalline free porphyrins were used as standards.
mesh_terms: D006801:Humans; D007475:Ion Exchange Resins; D008722:Methods; D011166:Porphyrins / Q000652:urine*
chemical_list: D007475:Ion Exchange Resins; D011166:Porphyrins