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Test Code UCAL Calcium, Urine, Random, LAB371


Cresolphthalein Complexone

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

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

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding


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).