Calcium
Measures blood calcium level—essential for bones, muscles, nerves, and heart. Abnormal levels can indicate parathyroid, kidney, or bone disorders.
Test Information
Reports In
Same day (5-6 hours)
Parameters
1
Requisites
Blood Sample
Sample Type
Blood
Measures
Serum calcium level—total calcium in blood. Some labs also measure ionized (free) calcium for more accurate assessment.
Identifies
Hypercalcemia (high calcium—hyperparathyroidism, cancer, vitamin D excess), hypocalcemia (low calcium—vitamin D deficiency, hypoparathyroidism, kidney disease), and bone metabolism disorders.
What is the Calcium Test?
Serum Calcium measures the calcium level in your blood. Calcium is critical for bone strength, muscle contraction, nerve signaling, and heart function. Both high and low calcium are dangerous — low calcium causes muscle cramps and tingling, while high calcium can cause kidney stones, abdominal pain, and heart rhythm problems.
Why Should You Take This Test?
Calcium imbalance often has no early symptoms. High calcium may indicate hyperparathyroidism (common in elderly) or other conditions. Low calcium with vitamin D deficiency is common in India. This test helps guide bone health and kidney management.
Who Should Get Tested?
Bone Health Concerns
Calcium is the primary building block of bones.
Kidney Stone Patients
High calcium contributes to kidney stones.
Muscle Cramps
Low calcium causes cramping and tetany.
Thyroid/Parathyroid Disorders
These glands regulate calcium levels.
On Calcium Supplements
Monitoring to avoid excessive levels.
Warning Signs — When Should You Get This Test?
Common Conditions Detected
Frequently Booked Together
Tests commonly ordered alongside Calcium for a complete picture
Vitamin D
Vitamin D is essential for calcium absorption
Phosphorus
Calcium and phosphorus are regulated together
PTH
Parathyroid hormone directly controls calcium levels
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