Lab Test : Calcium, Urine

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Alternate:Urine Calcium; CA Urine
Phone:(937) 641-3428
Available:Daily, 24 hours
Turnaround:Routine: 3 hours, STAT: 30 minutes
Specimen:Urine, random or timed
Volume:0.1 mL
Container:Clean plastic urine collection container with lid
Rejection:Contaminated with feces.
Normal:5-15 mg/dL
Uses:Evaluate bone disease, calcium metabolism, patients with renal stones (nephrolithiasis) and idiopathic hypercalciuria. High in hyperparathyroidism, extopic hyperparathyroidism and renal tubular acidosis. Low in vitamin D deficiency.
Limitations:Drugs affecting mineral metabolism should be withdrawn if possible (antacids, phosphates, diuretics, glucocorticoids, carbonic anhydrase inhibitors, anticonvulsants).
Method:Colorimetric bichromatic endpoint

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