Organic Acid Analysis, Urine

Test Code

UORG

Alias/See Also

Organic Acids, Qualitative, Urine

Quest Code
90404

CPT Codes
82570, 83919

Includes

63 Organic Acids
Creatinine, Random Urine

Preferred Specimen

3 mL Urine AND 13 mL Urine; submitted in 2 sterile urine transport containers

Minimum Volume

0.5 mL Urine and 4 mL Urine

Instructions

To prevent delays in testing, the laboratory requests the receipt of two labeled containers: One standard urine transport container (or standard tansport tube) containing specimen for organic acid analysis. --AND-- One standard transport tube labeled for creatinine analysis - used for normalizing urine results. If volume is less than 4 mL, call the Biochemical Genetics Laboratory for instructions.
Do not use preservatives. Avoid fecal contamination of urine.

Transport Temperature

Frozen

Specimen Stability

Room temperature: unacceptable
Refrigerated: unacceptable
Frozen: 28 days

Methodology
Gas Chromatography / Mass Spectrometry (GC/MS)

Setup Schedule

Tuesday, Thursday, Saturday a.m.

Report Available

5 days

Clinical Significance

Organic acidurias are a group of inborn errors of metabolism that may lead to acute life-threatening illness, developmental delays, and metabolic decompensation. Positive results may warrant confirmation by alternative specific methods.

Performing Laboratory
Quest Diagnostics Nichols Institute
San Juan Capistrano, CA

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.