Diagnostics·Diagnostics
Calcium blood test
Informed by recognized medical guidance
Overview
A calcium blood test measures the amount of calcium in your blood. Calcium is a mineral that helps your nerves, muscles, and heart work properly. The test is used to check for problems with your kidneys, bones, or parathyroid glands (small glands in your neck that control calcium levels).
Key facts
- A calcium blood test is a simple blood draw, often done as part of a routine health check.
- Normal calcium levels usually range between 8.5 and 10.2 milligrams per deciliter (mg/dL), but labs may differ slightly.
- Abnormal levels can indicate an underlying condition, but they do not diagnose the problem by themselves.
Yes, the calcium blood test is a common test that doctors order for many reasons, such as routine check-ups or when symptoms suggest a calcium imbalance.
Anyone may have a calcium blood test, but it is often done in people with kidney disease, bone disorders, or symptoms like fatigue, muscle cramps, or confusion.