Test Overview
Test Methodology

Gas Chromatography/Mass Spectrometry (GC/MS)

Test Usage

Diagnosis of suspected organic acidurias.

Reference Range *

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Many organic acidurias are episodic; the optimal time to evaluate is during the symptomatic period.

Test Details
Days Set Up
Monday - Friday
Analytic Time

5 - 10 days; contact MLabs Client Services Center or Pediatric Geneticist on Call if assay is needed on an urgent basis.

Soft Order Code
ORA
MiChart Code
Orotic Acid, Qualitative, Urine (MMGL)
Synonyms
  • ORA
  • URINE OROTIC ACID
  • Generic Peds Genetics Test
  • PGLABEL
  • BIOCH GEN REPORT
  • BIOCHEMICAL GENETICS REPORT
  • Urine Orotic Acid Shadow
  • ORAS
Laboratory
MMGL
Section
MMGL Biochemical Genetics
STAT Availability

STAT analysis must be approved by Pediatric Geneticist on Call.

STAT Limitations

6 Hours post approval for STAT result.

Specimen Requirements
Collection

Collect random urine specimen and freeze. Freeze each specimen immediately after collection if multiple collections are needed to reach the minimum volume. Include the patient’s family history, clinical condition (asymptomatic or acute), diet, and a list of current medications with the test requisition.

Normal Volume
10 mL random urine
Minimum Volume
5 mL random urine
Additional Information

Test may include medical geneticist interpretation of results at an additional charge. By ordering this test, the clinician acknowledges that a physician interpretation will be performed and billed as a separate additional charge if indicated.

Billing
CPT Code
83789
Fee Code
23793
Resources