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Mayo Clinic Laboratories

Test Code LAB814 Calcium, Urine, 24 hour

Specimen Requirement

Preservative: 20 – 30 mL of 6M HCl prior to the start of collection

24-hour urine collection – submit entire collection to laboratory

 

Referring lab: submit 10.0 mL aliquot from a total 24-hour urine collection

24-hour total volume is required on request form for processing.

Specimen Stability

2 days at 20-25° C

4 days at 2-8° C

Testing Schedule

Daily

Reference Range

42 – 353 mg/24 hours

Testing Department

Chemistry

Method

Arsenazo III

CPT Code

82340

Outpatient Turnaround Time

Within 8 hours of collection

Inpatient STAT Turnaround Time

Not Applicable

Inpatient Routine Turnaround Time

4 hours after receipt