FALAU - Specimen: Aminolevulinic Acid (ALA), Urine

Test Catalog

Test ID: FALAU    
Aminolevulinic Acid (ALA), Urine

Specimen Type Describes the specimen type needed for testing


Specimen Required Defines the optimal specimen. This field describes the type of specimen required to perform the test and the preferred volume to complete testing. The volume allows automated processing, fastest throughput and, when indicated, repeat or reflex testing.

Collect 24 hour urine. Urine is to be protected from light and maintained refrigerate during collection.

Submit 4 mL aliquot from urine, frozen in an amber vial (MML Supply T192), protected from light.



  1. Required: Total volume and duration.
  2. Required: Protect from light.
  3. Refrain from alcohol consumption 24 hours prior to collection. Increased ALA concentration is associated with exposure to alcohol, lead, and a variety of other agents.  Massive elevation of ALA occurs in the acute porphyrias and hereditary tyrosinemia.
  4. Specimen preservation with acid or base is discouraged and may cause assay interference. When collecting urine for additional tests that require acid or base preservation, the ALA aliquot should be removed prior to the addition of the acid or base.

Specimen Minimum Volume Defines the amount of specimen required to perform an assay once, including instrument and container dead space. Submitting the minimum specimen volume makes it impossible to repeat the test or perform confirmatory or perform reflex testing. In some situations, a minimum specimen volume may result in a QNS (quantity not sufficient) result, requiring a second specimen to be collected.

1.2 mL

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected




Warm reject; Cold OK







Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the laboratory. Alternate acceptable temperature(s) are also included.

Specimen TypeTemperatureTime
UrineFrozen (preferred)30 days
 Refrigerated 4 days