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HelpOrder Code LABCACR1 Calcium/Creatinine Ratio, Urine
Useful For
Useful for assessing kidney stone risk and screening for hypercalciuria
Specimen Requirements
Specimen Type: Urine
Collection Container: random urine collection in a urine specimen cup
Specimen Volume: 6 mL
Minimum Volume: 1 mL
Specimen Stability
| Specimen Type | Temperature | Stability |
| Urine | Ambient | N/A |
| Refrigerated (preferred) | 4 days | |
| Frozen | N/A |
Reference Values
- Calcium: 0.00 - 0.13 mg/dL (Reference value is for an adult, there are no pediatric reference values)
- A result of > 0.20 mg/dL in a fasting specimen signifies hypercalciuria.
Day(s) Test Set Up
Monday through Sunday
Performing Laboratory
Ridgeview Medical Center Laboratory
Methodology
Bichromatic endpoint/bichromatic rate - Includes calcium and creatinine.
Test Classification and CPT Coding
82340 - calcium
82570 - creatinine