Calcium normal range — check your value

Roughly 8.6 to 10.3 mg/dL for total serum calcium in adults.

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Your Calcium test value

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Calcium

mg/dL

What Calcium measures

Total calcium in blood, controlling nerve signalling, muscle contraction, clotting and bone strength.

Calcium normal range chart

ResultCalcium (mg/dL)

Below rangeBelow 8.4

In range8.4 – 10.2

Above range10.2 and above

These bands are for female, 31–45 years. Enter your age and gender above to see the bands for you. The table below shows the range for every age and gender.

Calcium normal range by age and gender

AgeMaleFemale

0–1 years8.8 – 11.3 mg/dL8.8 – 11.3 mg/dL

2–6 years8.8 – 10.8 mg/dL8.8 – 10.8 mg/dL

7–11 years8.8 – 10.8 mg/dL8.8 – 10.8 mg/dL

12–17 years8.4 – 10.2 mg/dL8.4 – 10.2 mg/dL

18–30 years8.4 – 10.2 mg/dL8.4 – 10.2 mg/dL

31–45 years8.4 – 10.2 mg/dL8.4 – 10.2 mg/dL

46–60 years8.4 – 10.2 mg/dL8.4 – 10.2 mg/dL

60 years and above8.8 – 10 mg/dL8.8 – 10 mg/dL

What a high Calcium means, and common causes

Blood calcium is above range. Persistent high calcium always needs a cause identified.

Common causes: Overactive parathyroid glands, which is the commonest cause, cancer affecting bone, excessive vitamin D or calcium supplements, prolonged immobility, and some diuretics.

What a low Calcium means, and common causes

Blood calcium is below range, which when marked can cause tingling, muscle cramps and spasms.

Common causes: Vitamin D deficiency, underactive parathyroid glands often after thyroid surgery, chronic kidney disease, low magnesium, pancreatitis, and low albumin, which lowers the measured total without lowering active calcium.

Frequently asked questions

Roughly 8.6 to 10.3 mg/dL for total serum calcium in adults.

Almost half of blood calcium travels bound to albumin. When albumin is low the total reads low even though active calcium is fine, so the result is corrected for albumin.

Yes, and it is the commonest reason in India. The body needs vitamin D to absorb calcium from food.

Haath pairon mein jhunjhunahat, maspeshiyon mein kharash aur cramps ho sakte hain. Vitamin D ki jaanch saath mein zaroori hai.

Please note. This page explains what a number means against reference ranges for your age and gender. It does not diagnose anything, cannot see the rest of your report, and is no substitute for a doctor. If your lab’s printed range differs, your lab’s range applies.