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Order Code LAB72 Calcium, 24 Hour Urine

Useful For

Evaluation of calcium oxalate and calcium phosphate kidney stone risk, and calculation of urinary supersaturations, also evaluation of bone diseases, including osteoporosis and osteomalacia

Specimen Requirements

Special Note: 24 hour collection container must be refrigerated during entire duration of collection.  Send 5-10 mL aliquot from a 24-hour urine collection.  Mix well before taking aliquot. 

 

  • 24-Hour urine total volume is required on request form and urine container for processing.
  • Follow instructions in Special Instructions.

Specimen Stability

Specimen Type Temperature Stability         
Urine Ambient N/A
  Refrigerated (preferred) 5 days
  Frozen N/A

Special Instructions

Reference Values

5-300 mg/24 hour

 

Note: This reference value is for a 24-hour collection. Specimen collected for duration other than a 24-hour time period is reported in units of mg/L, for which reference values are not established

Day(s) Test Set Up

Monday through Saturday

Performing Laboratory

Ridgeview Medical Center Laboratory

Methodology

Colorimetric

Test Classification and CPT Coding

82340