Calcium/Creatinine Ratio, Random, Urine
Use
Useful in the evaluation of calcium oxalate and calcium phosphate kidney stone risk; calculation of urinary supersaturation; and evaluation of bone diseases, including osteoporosis and osteomalacia.
Special Instructions
If not ordering electronically, complete, print, and send a Renal Diagnostics Test Request (T830) with the specimen.
Limitations
Interference was evaluated with intravenously administered gadolinium‑containing MRI contrast media: for Omniscan, no interference at therapeutic concentration, interference at higher concentrations; for Optimark, interference observed at therapeutic and higher concentrations.
FDA ApprovedNew York Approved
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
LOINC Codes
- 9321-1
- 9321-1
- 17862-4
- 2161-8
Result Turnaround Time
1-3 days
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
4 mL
Minimum Volume
1 mL
Container
Clean, plastic urine container with no metal cap or glued insert; Submission Container: Plastic, 5‑mL tube or clean plastic aliquot container with no metal cap or glued insert
Collection Instructions
Collect a random urine specimen. No preservative.
Causes for Rejection
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 14 days |
| Frozen | 30 days |