With T K, Pedersen J S
Scand J Clin Lab Invest. 1978 May;38(3):279-89. doi: 10.1080/00365517809108424.
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.
