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Calcium Random Urine
Test CodeAlias/See Also
Urinary Ca+2
CPT Codes
82340
Preferred Specimen
Minimum Volume
Instructions
Transport Temperature
Specimen Stability
Refrigerated: Urine 4 days at 2 - 8°C
Frozen: Urine 3 weeks at -20°C
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Methodology
Photometric
Setup Schedule
Report Available
Reference Range
Clinical Significance
Calcium is the most abundant mineral element in the body with about 99 percent in the bones primarily as hydroxyapatite. The remaining calcium is distributed between the various tissues and the extracellular fluids where it performs a vital role for many life sustaining processes. Among the extra skeletal functions of calcium are involvement in blood coagulation, neuromuscular conduction, excitability of skeletal and cardiac muscle, enzyme activation, and the preservation of cell membrane integrity and permeability. Serum calcium levels and hence the body content are controlled by parathyroid hormone (PTH), calcitonin, and vitamin D. An imbalance in any of these modulators leads to alterations of the body and serum calcium levels. Increases in serum PTH or vitamin D are usually associated with hypercalcemia. Increased serum calcium levels may also be observed in multiple myeloma and other neoplastic diseases. Hypocalcemia may be observed e.g. in hypoparathyroidism, nephrosis, and pancreatitis. Urine calcium in urine test may be used to diagnose or monitor kidney function or kidney stones. It may also be used to diagnose disorders of the parathyroid, a gland near the thyroid that helps regulate the amount of calcium in your body.
Performing Laboratory
Frederick Health Laboratory
400 W 7th Street
Frederick, MD 20701
Last Updated: December 28, 2023