HomeLab TestSerum Calcium
Overview
The serum calcium test measures the amount of calcium in the blood. Calcium is an essential mineral that plays a key role in bone health, muscle function, nerve transmission, and blood clotting. There are two types of calcium that can be measured:...
Risk assessment
Risk Assessment
The test is commonly ordered to assess:
- Parathyroid function
- Kidney function
- Bone disorders (like osteoporosis or osteomalacia)
- Certain cancers (e.g., hypercalcemia in cancer patient...
Ranges
Normal Range
- Total calcium: 8.5 to 10.2 mg/dL (depending on the lab and methods used)
- Ionized calcium: 4.6 to 5.3 mg/dL
(Note: Reference ranges can vary slightly depending on ...
Test result interpretation
Interpretation
- High calcium levels (Hypercalcemia) can indicate:
- Hyperparathyroidism
- Cancer
- Kidney disease
- Vitamin D overdose
- Low calcium levels (Hypo...
Sample types
Sample Type
- Blood sample: A blood draw from a vein (venipuncture) is required.
- For ionized calcium, the blood must be collected in a specific way to avoid contamination by air.
Frequently Asked Questions
What are the symptoms of calcium deficiency in adults?
Can low calcium cause weight gain?
Does calcium make poop?
Do calcium pills make you gain weight?
Does calcium help you sleep?
What does low calcium cause?
Does calcium reduce belly fat?
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Serum Calcium
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Sample Type:
blood
Fasting Required:
No
Description
blood calcium levels are due to something other than hyperparathyroidism, such as cancers or malignancies not from the parathyroid gland. However, in most patients, high calcium levels are caused by hyperparathyroidism, a condition when the parathyroid glands produce too much parathyroid hormone.
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