Calcium 24 Hour Urine Test
Test Code: 003269
Specimen Type: Urine
Calcium 24 Hour Urine Test (Labcorp)
This test measures Calcium levels in a 24-hour urine sample. Calcium is a mineral which contributes to healthy bones and teeth as well as other functions including the nervous system, heart, and muscles. Measuring the calcium levels being passed from the body in urine can help determine if a person has an excess or deficiency.
Low calcium levels can be caused by a dietary deficiency, malabsorption disorders, issues with the parathyroid gland, and loss of bone density. Higher than normal levels of calcium in the urine can be a sign of kidney stones, formed from excess calcium and minerals building up in the kidneys. Common symptoms of kidney stones include back pain, abdominal pain, blood in the urine, nausea and frequent urination.
A calcium urine test is sometimes ordered with related tests such as a Parathyroid Hormone or Vitamin D. A Blood Calcium test is also available.
Turnaround for this test is typically 1-2 business days.
Where can I find a Calcium test near me?
Check our lab finder to locate a collection site in your area.
Note: Result turn around times are an estimate and are not guaranteed. Our reference lab may need additional time due to weather, holidays, confirmation/repeat testing, or equipment maintenance.
Urinary calcium results are more meaningful if the person has been on a low calcium, neutral ash diet for three days prior to urine collection. Drugs affecting mineral metabolism should be withdrawn, if possible, two to four weeks prior to and during collection. These include antacids, phosphates, diuretics, glucocorticoids, carbonic anhydrase inhibitors, and anticonvulsants.
For 24-hour urine specimen: Obtain a specimen container and instructions from the draw site. Void at 8 AM and discard the specimen. Then collect all urine including the final void at the end of the 24-hour collection period (ie, 8 AM the next morning) in the specimen container. Screw the lid on securely and return the container promptly to the draw site.
If this test is being ordered along with any other blood and/or urine medical testing, it is recommended you have the specimen(s) for your other tests collected at the same time you bring the 24-hour urine specimen to the draw site.