Calcium is vital for bones, nerves and muscles. Blood calcium is tightly controlled, so abnormal levels always deserve a cause.
| Measure | Range |
|---|---|
| Total calcium | 8.5–10.2 mg/dL |
| Ionised calcium | 4.6–5.3 mg/dL |
The most common causes are an overactive parathyroid gland and certain cancers. It is investigated because it affects the kidneys, bones and brain.
No — blood calcium reflects the level circulating now, not the calcium stored in bones. Bone density is measured separately (a DEXA scan).
MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.