Delta Aminolevulinic Acid, Random Urine

Test Code

ALAUR

Quest Code

6301

Alias/See Also

6301

CPT Codes
82135

Preferred Specimen

2 mL random urine collected in sterile leak-proof container - protected from light

Minimum Volume

0.6 mL

Other Acceptable Specimens

Urine preserved with 1 mL concentrated glacial acetic acid or 1 mL 6N HCl, protected from light, catherized urine in sterile, plastic, screw-capped container

Instructions

Wrap container in alumuninum foil to protect from light. Do not use preservatives.
Do not use first morning void, late evening specimen (after 8 p.m.), or specimen after excessive fluid intake. Keep refrigerated and transport refrigerated (cold packs).

Transport Temperature

Refrigerated (cold packs)

Specimen Stability

Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 30 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Received room temperature • Not protected from light

Methodology
Colorimetric (C)

Setup Schedule

P.M.

Reference Range

1-8 Years	2.3-6.2 mg/g creat
9-17 Years	1.5-5.3 mg/g creat
≥18 Years Male	<1.8 mg/g creat
≥18 Years Female	<5.4 mg/g creat

Clinical Significance

ALA is a precursor to uroporphyrin, coproporphyrin, and protoporphyrin. Concentrations of ALA are greatly increased in many patients with acute neurological forms of porphyrias and in some patients with chronic alcohol abuse.

Performing Laboratory
Quest Diagnostics Chantilly Nichols Institute
14225 Newbrook Dr.
Chantilly, VA 20151-2228

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.