The initial diagnosis of<unk>  porphyria is confirmed by urinalysis, including the common method, the Watson-Schwartz test. Elevated urine porphobilinogen confirms diagnosis of<unk> , hereditary coproporphyria (HCP), or variegate porphyria (VP). A positive test should be indicated with an increase of five times normal, not just a slight increase which can occur with dehydration. To distinguish between<unk>  from HCP and VP, fecal porphyrin levels are normal in<unk>  but elevated in HCP and VP. Rapid, accurate diagnosis is important. Delays in diagnosis may result in permanent neurological damage or death.
Acute intermittent porphyria
Hepatic porphyria
Variegate porphyria
Erythropoietic porphyria
Hepatoerythropoietic porphyria
Woodhouse–Sakati syndrome
Diarrhetic shellfish poisoning
Porphyria