CALCIUM, URINE

Specimen Required
Collect 24 hour urine. Specimen MUST be refrigerated during entire collection period. Mix the 24 hour collection well and send 3.0 mL urine (0.5 mL minimum) refrigerated in a screw-capped plastic vial. Record total volume and collection time interval on specimen label.

Alternate Specimen
Random urine

Methodology
Quantitative Spectrophotometry

Stability
Room temperature: 48 hours; Refrigerated: 4 days; Frozen: 3 weeks

Reference Range
By report

Performed
Sunday-Saturday

Turnaround Time2-4 days
Test CodeAUCAL
CPT-4 Code (s)
82340
LOINC Codes
Hours collected:   30211-7  
Total Volume:   19153-6  
Calcium, Urine-per volume:   17862-4  
Calcium, Urine-per24:   6874-2  
Creatinine, Urine-per volume:   2161-8  
Creatinine, Urine-per 24h:   2162-6  
Calcium/Creatinine Ratio, Urine:   13717-4  

Warde
Medical
Laboratory