Test Details
Methodology
Gas chromatography/mass spectrometry (GC/MS)
Result Turnaround Time
3 - 7 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Use
Urine organic acid testing is useful in the diagnosis and monitoring of patients with inborn errors of organic acid metabolism, inborn errors of amino acid metabolism, urea cycle defects, and defects of the mitochondrial respiratory chain.
Limitations
Organic acid analysis may fail to detect certain disorders that are characterized by minimal or intermittent metabolite excretion.
This test was developed, and its performance characteristics determined, by LabCorp. It has not been cleared or approved by the US Food and Drug Administration (FDA).
References
Specimen Requirements
Specimen
Urine (random), frozen
Volume
10 mL
Minimum Volume
3 mL (Note: This volume does not allow for repeat testing.)
Container
Plastic urine container, no preservative
Stability Requirements
Temperature | Period |
|---|---|
Frozen | 12 months |
Storage Instructions
Freeze
Causes for Rejection
Urine too dilute; quantity not sufficient for analysis
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 716720 | Organic Acid Analysis, Urine | 49287-6 | 716721 | Organic Acid Interpretation | 49287-6 | |
| 716720 | Organic Acid Analysis, Urine | 49287-6 | 716723 | Director Review | N/A | |
| 716720 | Organic Acid Analysis, Urine | 49287-6 | 716722 | Methodology: | 49549-9 | |
| Order Code | 716720 | |||||
| Order Code Name | Organic Acid Analysis, Urine | |||||
| Order Loinc | 49287-6 | |||||
| Result Code | 716721 | |||||
| Result Code Name | Organic Acid Interpretation | |||||
| UofM | ||||||
| Result LOINC | 49287-6 | |||||
| Order Code | 716720 | |||||
| Order Code Name | Organic Acid Analysis, Urine | |||||
| Order Loinc | 49287-6 | |||||
| Result Code | 716723 | |||||
| Result Code Name | Director Review | |||||
| UofM | ||||||
| Result LOINC | N/A | |||||
| Order Code | 716720 | |||||
| Order Code Name | Organic Acid Analysis, Urine | |||||
| Order Loinc | 49287-6 | |||||
| Result Code | 716722 | |||||
| Result Code Name | Methodology: | |||||
| UofM | ||||||
| Result LOINC | 49549-9 |