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A uroporphyrin; an acyclic tetrapyrrole that is one of the natural breakdown products of heme via choleglobin, verdohemochrome, biliverdin, bilirubin, and d-urobilinogen; a urinary pigment that gives a varying orange-red coloration to urine according to its degree of oxidation.
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urohematoporphyrin(ū″rō-hĕm″ă-tō-por′fĭr-ĭn) [″ + ″ + porphyra, purple]
Iron-free hematin in urine when intravascular hemolysis occurs.
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