10 mL (5 mL min.) aliquot of 24 hour Urine collected in a dark coloured 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 Next day
Delta Amino levulinic Acid shows a marked increase in cases of Porphyrias during an acute attack. The levels fall to normal after the acute episode except in cases of Acute intermittent porphyria and Hereditary coproporphyria.
Use dark colored container or wrap completely with black paper or aluminium foil.