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HelpTest ID OROT Orotic Acid, Random, Urine
Useful For
Evaluation of the differential diagnosis of hyperammonemia and hereditary orotic aciduria
Sensitive indicator of ornithine transcarbamylase (OTC) activity after administration of allopurinol or a protein load to identify OTC carriers
Special Instructions
Method Name
Colorimetric
Reporting Name
Orotic Acid, USpecimen Type
UrineNecessary Information
1. Patient's age is required.
2. Provide a reason for testing.
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 10 mL
Collection Instructions:
1. Collect a random or timed urine specimen.
2. No preservative needed.
Specimen Minimum Volume
3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Frozen | 30 days |
Reference Values
<2 weeks: 1.4-5.3 mmol/mol creatinine
2 weeks-1 year: 1.0-3.2 mmol/mol creatinine
2-10 years: 0.5-3.3 mmol/mol creatinine
≥11 years: 0.4-1.2 mmol/mol creatinine
Day(s) Performed
Tuesday, Thursday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
83921
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| OROT | Orotic Acid, U | 17869-9 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8905 | Orotic Acid, U | 17869-9 |
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.Report Available
4 to 8 daysNY State Approved
YesForms
1. Biochemical Genetics Patient Information (T602)
2. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.