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CALCIUM, URINE, 24 HOUR
Message- Submit the Total Volume in mLs.
Test Code
CAUN
CPT Codes
82340
Preferred Specimen
24 Hour Urine Container without preservative
(aliquot or transfer urine into a transfer tube and note the total volume)
(aliquot or transfer urine into a transfer tube and note the total volume)
Minimum Volume
5 mL
Instructions
- Mix the specimen well and measure the 24-Hour volume
- Note the total volume in mLs.
- Pour off 20 mL of urine into a separate plastic screw-cap container.
- Refrigerate if not tested immediately.
- Sample will be acidified to a pH <2 with 6N HCL. Samples with urine pH below 1.5 may result in a negative bias.
Transport Container
Plastic screw-cap container
Transport Temperature
Refrigerate
Specimen Stability
2-8°C up to 7 days
Methodology
Arsenazo III
Setup Schedule
M, T, W, Th, F, Sa, Sun
Report Available
Same day tested at the performing laboratory.
Reference Range
100-300 mg/day
Clinical Significance
Differentiates between hypercalciuria and hypocalciuria and aids in the differential diagnosis of nephrolithiasis.
Performed By
Alverno Laboratories
Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)
Additional Information
24 Hour Urine Collection
Last Updated: November 8, 2024