10 mL (5 mL min.) aliquot of 24 hour Urine collected in a dark coloured vial container wrapped completely with black paper or aluminium foil. Ship refrigerated or frozen. Record 24 hour volume on test request form and urine container. Uncovered vials exposed to light are unacceptable.
Sample Tue Fri by 9 am; Report Same day
Urinary porphobilinogen is the first step in the diagnosis of Acute intermittent porphyria. An acute attack usually leads to astrointestinal disturbance and neuropsychiatric disorders.
Collect urine in a dark coloured vial container wrapped completely with black paper or aluminium foil.