10 mL (5 mL min.) aliquot of 24 hour Urine in a dark coloured via container wrapped completely with black paper or aluminium foil. Do not use preservatives. Ship refrigerated or frozen. Record 24 hour volume on test request form and urine container. Uncovered vials exposed to light are unacceptable.
Sample Daily by 1 pm.; Report Same day
Porphyrias are a diverse group of disorders characterized by accumulation of porphyrins ; porphyrinogen. This assay is used in the differential diagnosis of Porphyrias. It is a preferred test during symptomatic period for Acute intermittent porphyria, Hereditary coproporphyria ; Variegate porphyria.
Collect urine in a dark coloured container wrapped completely with black paper or aluminium foil.