coproporphyrin /cop·ro·por·phy·rin/ (-por´fĭ-rin) a porphyrin occurring as several isomers; the III isomer, an intermediate in heme biosynthesis, is excreted in the feces and urine in hereditary coproporphyria and variegate porphyria; the I isomer, a side product, is excreted in the feces and urine in congenital erythropoietic porphyria.
coproporphyrin
coproporphyrin (kop´r
por´firin),
cop·ro·por·phy·rin (k p r -pôr f-r n)n. Either of two porphyrin compounds found normally in feces as a decomposition product of bilirubin. |
coproporphyrin
[kop′rōpôr′firin]
Etymology: Gk, kopros + porphyros, purple
1 any of the nitrogenous organic substances normally excreted in the feces that are products of the breakdown of bilirubin from hemoglobin decomposition.
2 a test used to measure red blood cell porphyrin levels.
coproporphyrin (kop´r
por´firin),n a nitrogenous organic substance normally excreted in the feces as a breakdown of bilirubin.
coproporphyrin
a porphyrin formed in the blood-forming organs and intestine and found in the urine and feces. There are two chemically distinct substances, coproporphyrins I and III.
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