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Quantitative Orotic Acid, Urine

Test Code:




Specimen Container

Wide mouth sterile container

Specimen Requirement

3 mL - 10 mL

Specimen Storage / Transport

Fresh urine and no preservative. Please send with a separate ice pack.



Orderable as STAT?

For URGENT analysis, contact the Biochemical Genetics lab on 6394 8728 or the Lead Scientist on 8388 8741 to discuss.

Turn Around Time

5 working days

Reference Value(s)

0 to 3.5 µmol/mmol creatinine

Testing Laboratory Location



Biochemical Genetics lab

Contact Number

6394 8728

Day and Time Performed

Mon – Fri: 0900 hrs – 1800 hrs
Last specimen reciept time is at 1730 hrs.

Orderable on CPOE?


Downtime Form

Additional Information

Useful For​ ​Evaluating the differential diagnosis of hyperammonemia and hereditary orotic aciduria. For female patients, it may be helpful in determining carrier status or exclude OTC deficiency after an allupurinol loading test.
Clinical Indication​
  • failure to thrive
  • mental and physical retardation
Interpretation ​ ​The interpretation of the result must be correlated with clinical and laboratory findings. The value of the orotic acid concentration is reported.
For URGENT analysis, contact the Biochemical Genetics laboratory at 6394 8728 or the Lead Scientist at 8388 8741 to discuss.
If sent after office hours, urine will be stored in Clinical Laboratory -20°C freezer.

Change History Notes



Quantitative Orotic Acid, urine (Inhouse test) BC6160U

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