Calcium in Urine Test
Reviewed
A calcium in urine test measures the amount of calcium in your urine. If your urine calcium levels aren't normal, it may be a sign of kidney disease, a parathyroid disorder, bone disease, or another condition that affects how your body uses calcium.
Preparation and collection
Your provider will let you know if there are any special instructions to follow. You may be asked to avoid certain foods and medicines for several days before the test. But don't stop taking any medicines without talking with your provider first.
Understanding this test
Use the reference interval and units printed by the laboratory that performed the test. A result outside that interval is not a diagnosis by itself, and a result inside it does not rule out every condition. Your symptoms, history, medicines, timing, and related tests can change what the result means.
- A calcium in urine test does not tell you how much calcium is in your bones; bone health is measured with a DEXA scan.
- Urine calcium levels can be affected by diet, supplements, and medicines, which may lead to false interpretation if not accounted for.
What to do next
Talk with your healthcare provider about your results. They may recommend additional tests such as blood calcium tests, parathyroid hormone tests, or imaging to determine the cause of abnormal levels and guide treatment.