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HelpTest Code OROT Orotic Acid, Random, Urine
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Reporting Name
Orotic Acid, USpecimen Type
UrineNecessary Information
Patient's age is required.
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 3 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative needed.
Reject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Frozen | 90 days |
Specimen Minimum Volume
2 mL
Special Instructions
Day(s) Performed
Tuesday, Thursday
Specimen Retention Time
1 monthReport Available
3 to 7 daysReference Values
≤6 years: ≤4 mmol/mol creatinine
7-18 years: ≤3 mmol/mol creatinine
≥19 years: 5 mmol/mol creatinine
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
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 |
Forms
1. Biochemical Genetics Patient Information (T602)
2. If not ordering electronically, complete, print, and send a Biochemical Genetics Test Request (T798) with the specimen.