Calcium (Ca) Test

The Calcium (Ca) Test measures the level of calcium in the blood, an essential mineral for bone health, muscle function, nerve signaling, and heart function. Calcium also plays a key role in blood clotting and enzyme activity.

Why is the Calcium Test Important?

• High calcium levels (Hypercalcemia) may indicate hyperparathyroidism, vitamin D toxicity, kidney disease, bone disorders, or certain cancers.
• Low calcium levels (Hypocalcemia) may result from vitamin D deficiency, parathyroid disorders, kidney disease, or malnutrition.
• Imbalanced calcium levels can lead to muscle cramps, numbness, bone weakness, fatigue, or abnormal heart rhythms.

When is the Test Recommended?

• If a person has bone pain, muscle weakness, numbness, irregular heartbeat, or kidney disease.
• People with osteoporosis, thyroid or parathyroid disorders, or chronic kidney disease may need regular monitoring.
• Often included in bone health panels, electrolyte tests, and kidney function tests (KFT/RFT).