Test Code UORGSM Organic Acids Screen, Random, Urine
Additional Codes
MAYO: OAU
EPIC: LAB418
Necessary Information
1. Patient's age is required.
2. Include family history, clinical condition (asymptomatic or acute episode), diet, and drug therapy information.
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 10 mL
Pediatric: If insufficient collection volume, submit as much specimen as possible in a single container; the laboratory will determine if volume is sufficient for testing.
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Forms
If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.
Useful For
Diagnosis of inborn errors of metabolism
Testing Algorithm
The following algorithms are available in Special Instructions:
-Porphyria (Acute) Testing Algorithm
-Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm
Special Instructions
- Porphyria (Acute) Testing Algorithm
- Newborn Screening Follow-up for Isolated C4 Acylcarnitine Elevations (also applies to any plasma or serum C4 acylcarnitine elevations)
- Newborn Screening Follow-up for Elevations of C8, C6, and C10 Acylcarnitine Elevations (also applies to any plasma or serum C8, C6, and C10 acylcarnitine elevations)
- Newborn Screening Follow-up for Isolated C5 Acylcarnitines Elevations (also applies to any plasma or serum C5 acylcarnitine elevations)
- Epilepsy: Unexplained Refractory and/or Familial Testing Algorithm
Method Name
Gas Chromatography-Mass Spectrometry (GC-MS)
Reporting Name
Organic Acids Scrn, USpecimen Type
UrineSpecimen Minimum Volume
4 mL
Specimen Stability Information
Specimen Type | Temperature | Time | Special Container |
---|---|---|---|
Urine | Frozen (preferred) | 416 days | |
Refrigerated | 14 days |
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability. |
Reference Values
An interpretive report will be provided.
Day(s) Performed
Monday through Saturday
Report Available
3 to 6 daysPerforming Laboratory

Test Classification
This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
83919
LOINC Code Information
Test ID | Test Order Name | Order LOINC Value |
---|---|---|
OAU | Organic Acids Scrn, U | 49287-6 |
Result ID | Test Result Name | Result LOINC Value |
---|---|---|
80619 | Organic Acids Scrn, U | 49287-6 |