Aminolevulinic Acid, Delta, 24-Hour Urine

Test ID: 

702767

CPT code:

82135

Synonyms:

Delta Aminolevulinic Acid, 24-Hour Urine

Clinical Use:

Diagnose porphyrias: Δ-ALA may be increased in attacks of acute intermittent porphyria, hereditary coproporphyria, and porphyria variegata; evaluation of certain neurological problems with abdominal pain; diagnosis of lead or mercury poisoning

Specimen Type:

Urine (24-hour), frozen and protected from light

Requested Volume: 

3 mL aliquot

Minimum Volume: 

l mL aliquot

Container Type: 

Plastic 24-hour urine container with 30 mL of 30% acetic acid and amber plastic frozen transport tube and cap

Collection:

Instruct the patient to void at 8 AM (or 8 PM) and discard the specimen. Then collect all the urine, including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM [or 8 PM] the following day), in the 24-hour collection container. Specimen must be kept refrigerated during collection

Storage Instructions:

Instruct the patient to void at 8 AM (or 8 PM) and discard the specimen. Then collect all the urine, including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM [or 8 PM] the following day), in the 24-hour collection container. Specimen must be kept refrigerated during collection

Rejection Criteria:

Specimen not protected from light; use of preservative other than 30% acetic acid; use of sodium carbonate preservative.

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