Evaluation of patients who present with signs or symptoms suggestive of porphyria cutanea tarda, hereditary coproporphyria, variegate porphyria, congenital erythropoietic porphyria, erythropoietic protoporphyria, or X-linked dominant protoporphyria.
Specimens smaller than 100 g may not provide interpretable results
Submit all containers
Mayo stool collection jar
Frozen (preferred) - 14 days
Refrigerated - 14 days
High-Performance Liquid Chromatography (HPLC)
Porphyrins are quantified by fluorescence