A Calcium test measures the level of calcium in your blood. Calcium is the most abundant mineral in your body, essential for bone health, muscle contraction, nerve signaling, blood clotting, and heart function.
What This Test Measures
Total Serum Calcium:
The total amount of calcium in blood, including calcium bound to proteins (mainly albumin) and free (ionized) calcium. About 99% of body calcium is in bones; the remaining 1% circulates in blood.
Reference Range
Normal: 8.5-10.5 mg/dL
Note: Results should be interpreted alongside albumin levels, as low albumin can falsely lower calcium readings.
Who Should Consider This Test
• Symptoms of calcium imbalance (muscle cramps, numbness, fatigue)
• Bone health evaluation
• Kidney disease monitoring
• Parathyroid disorder evaluation
• Cancer screening and monitoring
• Routine health screening
What Abnormal Calcium May Indicate
High Calcium (Hypercalcemia):
• Hyperparathyroidism (most common)
• Cancer (bone metastases, lung, breast)
• Excessive vitamin D
• Certain medications
• Prolonged immobilization
Symptoms: Fatigue, weakness, confusion, constipation, excessive thirst
Low Calcium (Hypocalcemia):
• Hypoparathyroidism
• Vitamin D deficiency
• Kidney disease
• Magnesium deficiency
• Malabsorption
Symptoms: Muscle cramps, numbness, tingling, irregular heartbeat
How It Works
1. Order your test online – no doctor visit required
2. Visit any Quest Diagnostics location nationwide
3. Simple blood draw takes approximately 5 minutes
4. Results delivered to your secure portal within 1-2 business days
Preparation
No fasting required.
Related Tests to Consider
• Vitamin D – Affects calcium absorption
• PTH (Parathyroid Hormone) – Regulates calcium
• Comprehensive Metabolic Panel – Includes calcium and albumin
• Magnesium – Related mineral
Why Choose Wittmer Rejuvenation Clinic
At $12, our Calcium test is affordably priced. We partner with Quest Diagnostics for reliable, CLIA-certified laboratory testing.
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