Days Set Up
Analytic Time

8 hours

Soft Order Code

Test Updated:



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Test Overview

Test Methodology

Colorimetric (Arsenazo III)

Test Usage

Evaluation of calcium metabolism

Reference Range

Varies with diet: 100 - 300 mg/24 hours (2.50-7.50 mmol/24 hours). Random urine collections are reported in units of mg/dL, for which reference values are not established.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

24 hour urine collection, or random sample. Collect a timed 24-hour urine sample. Instruct the patient to void at 8:00am and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24 hour collection period, i.e., 8:00am the next morning. Refrigerate during collection. Container MUST be labeled date and time collection started and finished. Screw the lid on securely, transport the specimen promptly to the laboratory. Any test requiring a 24 hr urine collection with no preservative may also be run on this specimen.

Collection Offsite

Collect 24 hour urine specimen with no preservative. Aliquot 5 mL into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form. Random urine also acceptable.

Normal Volume
5 mL aliquot of 24 hour urine collection or 2 mL aliquot of random urine collection.
Minimum Volume
2 mL aliquot of 24 hour urine collection or 1 mL aliquot of random urine collection.

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.