Calciumblood
Serum Calcium
Measures calcium, important for bones, nerves and muscles.
What it measures
The level of calcium in your blood.
Why it is ordered
To investigate bone, kidney or parathyroid problems.
How to prepare
No special preparation usually needed.
What happens during the test
A blood sample is drawn from a vein.
Normal ranges
| Group | Normal range |
|---|---|
| Adult | 8.5 – 10.5 mg/dL |
Ranges vary slightly between laboratories.
What abnormal results may mean
High or low calcium can affect bones, nerves and the heart.
Related conditions: Osteoporosis, Parathyroid disorders
Related tests: Vitamin D
⚠️ Important: Abnormal results do not mean you have a disease. Always discuss your results with your doctor.