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Test Code UCAL Calcium, Urine, Random, LAB371

Performing Laboratory

St. Luke's Hospital Cedar Rapids

Specimen Requirements


Preferred: Random Urine Collection

Specimen Volume: 0.1 mL from a random urine collection

Stability: Urine specimens may be stored up to 4 days at 2-8°C.

Collection Instructions: When preparing for collection, add 1-2 ml of 6N HCl per

               random specimen.  Alternatively, specimen may be just refrigerated during

               collection, and acidified to a pH of 2 upon receipt in laboratory. (FOR LAB USE ONLY)

Reference Values

No established reference values

Useful For

Calcium measurements are used in the diagnosis and treatment of parathyroid disease, a variety of bone diseases, chronic renal disease, and tetany (intermittent muscular contractions or spasms).

Day(s) Test Set Up

Monday through Sunday


Cresolphthalein Complexone

Note: A 24-hour urine collection is the preferred specimen. See #UCA24H Calcium, 24 Hour, Urine.

Test Classification and CPT Coding