Organic Acids, Urine
Also known as: ORG AC
Use
This test is used for the diagnostic evaluation of patients with possible organic acidemias, fatty acid oxidation disorders, and other related metabolic conditions. Organic acidurias are inborn errors of metabolism that often result in the accumulation of specific organic acids in the urine, which can be indicative of faulty metabolic pathways.
Special Instructions
Not provided.
Limitations
Certain analytes will only be reported if present at clinically significant concentrations. A variety of factors including hydration status, diet, and medication use can influence results. Incorrect or inadequate specimen handling may affect the test outcomes. Clinical correlation is necessary for further interpretation.
New York Approved
Methodology
Mass Spectrometry
Biomarkers
LOINC Codes
- 25112-4 - Lactate/Creat Ur-sRto
- 25132-2 - Pyruvate/Creat Ur-sRto
- 25136-3 - Succinate/Creat Ur-sRto
- 29507-1 - A-Ketoglut/Creat Ur-sRto
- 25101-7 - Fumarate/Creat Ur-sRto
- 25116-5 - Methylmalonate/Creat Ur-sRto
- 29509-7 - B-OH-Butyr/Creat Ur-sRto
- 29524-6 - Acetoacet/Creat Ur-sRto
- 25083-7 - 2Oxo3Me-valerate/Creat Ur-sRto
- 25084-5 - 2Oxoisocaproate/Creat Ur-sRto
- 25085-2 - 2Oxoisovalerate/Creat Ur-sRto
- 25099-3 - Ethylmalonate/Creat Ur-sRto
- 29859-6 - Adipate/Creat Ur-sRto
- 25135-5 - Suberate/Creat Ur-sRto
- 25134-8 - Sebacate/Creat Ur-sRto
- 25088-6 - 4OH-phenylacetate/Creat Ur-sRto
- 25089-4 - 4OH-phenyllactate/Creat Ur-sRto
- 29519-6 - 4OH-phenylpyruvate/Creat Ur-sRto
- 25137-1 - Succinylacetone/Creat Ur-sRto
- 33477-1 - Organic Acids Pattern Ur-Imp
- 2161-8 - Creat Ur-mCnc
Result Turnaround Time
3-7 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
9 mL
Minimum Volume
3 mL
Container
ARUP standard tubes
Collection Instructions
Collect random urine. Avoid dilute urine when possible.
Patient Preparation
Avoid dilute urine when possible.
Storage Instructions
Freeze immediately after transfer to ARUP standard tubes. CRITICAL FROZEN.
Causes for Rejection
Specimen not frozen, inadequate volume
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | Unacceptable |
| Refrigerated | Unacceptable |
| Frozen | 1 month |
Other tests from different labs that may be relevant