Biochemistry In porphyra cutanea tarda the type of porphyrin excreted in urine is A Coproporphyrin - I B Uroporphyrin - I C Uroporphyrins - II D Type I & III uroporphyrins 💡 Explanation In porphyra cutanea tarda the type of porphyrin excreted in urine is ✓ Correct Answer: D. Type I & III uroporphyrins