Evaluate suspected aminolevulinic acid dehydratase deficiency (ADP) porphyria or hereditary tyrosinemia.
Quantitative Ion Exchange Chromatography/Spectrophotometry
Mon, Wed, Fri
Refrain from alcohol consumption 24 hours prior to collection.
Transfer a 4 mL aliquot from a well-mixed collection to an ARUP Standard Transport Tube. (Min: 1.2 mL)
Body fluids other than urine.
Ambient: Unacceptable; Refrigerated: 4 days; Frozen: 1 month
|Aminolevulinic Acid - per volume||0-35 µmol/L|
|ALA, Random Urine - ratio to CRT||By Report|
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.
Specimen preservation with acid or base may interfere with results. If collected urine will be used for additional testing, remove the ALA aliquot before adding any acid or base preservatives.
|Component Test Code*||Component Chart Name||LOINC|
|0020207||Creatinine, Urine - per volume||2161-8|
|0080104||Aminolevulinic Acid - per volume||34284-0|
|2011475||ALA, Random Urine ratio to CRT||39782-8|
- 5-Aminolevulinic Acid
- Delta-Aminolevulinic Acid