Citric Acid, 24‑Hour Urine without Creatinine
Also known as: Citrate
Use
Measurement of citric acid in a 24‑hour urine collection without simultaneous creatinine measurement; useful in evaluating metabolic status, acid‑base balance, and kidney stone risk via citrate excretion levels.
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Other
Biomarkers
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
10 mL aliquot of a 24‑hour urine
Minimum Volume
1.5 mL
Container
Plastic leak‑proof urine container
Collection Instructions
Do not include first morning specimen; collect all subsequent voidings. Last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning's first voiding. Specify 24‑hour total volume on container and test requisition.
Causes for Rejection
Received room temperature • Acidified urine
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 8 hours |
| Refrigerated | 30 days |
| Frozen | 60 days |
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