What are the possible causes of high calcium levels?

High calcium levels may indicate hyperparathyroidism, certain cancers, or kidney disease.

What are the possible causes of low calcium levels?

Low calcium may result from vitamin D deficiency, calcium absorption problems, or hypoparathyroidism.

Are there risks associated with the test?

There are no major risks, though mild pain or bruising may occur at the blood draw site.

How long does it take to get results?

Results are typically available within 24-48 hours, but this may vary by laboratory.

Can this test diagnose all calcium problems?

No, it is used as part of a comprehensive assessment and should be interpreted alongside other tests and medical history.

What should I do if the results are abnormal?

Consult your doctor to evaluate the results and determine next steps, such as additional tests or dietary adjustments.

Medical Laboratories

Bone and Heart Mineral Check

Total Serum Calcium Test

A comprehensive test measuring total serum calcium to support bone strength, monitor heart and nerve functions, and detect early mineral imbalances in the body.

Trusted medical contentUpdated: 25-04-2026Views: 41LHL-46

About this service

The Calcium in Serum (Total) test is a blood test that measures the total calcium level in the blood, including both calcium bound to proteins and free calcium. Calcium is an essential nutrient that plays a vital role in various bodily functions, such as bone and tooth formation, regulating heart rhythms, and transmitting nerve signals. This test is often performed to assess bone health, as it is used to monitor calcium levels in individuals at risk for bone problems, such as osteoporosis. It is also used to evaluate the function of the parathyroid glands, which secrete hormones responsible for regulating calcium levels in the body. The results of this test can help diagnose conditions like hypocalcemia (low calcium) or hypercalcemia (high calcium), which may indicate problems with the endocrine system or kidneys. Results should always be interpreted in conjunction with other tests and the patient's medical history to provide a comprehensive understanding of their health condition.

Purpose Test

Bone health: Helps assess bone density and health, as calcium is an essential element in bone formation.
Parathyroid function: Abnormal calcium levels may indicate problems with the parathyroid glands, which regulate calcium levels in the body.
Kidney problems: Elevated calcium levels may indicate kidney issues, such as hypercalciuria or kidney stone formation.
Endocrine disorders: Can reveal disorders such as parathyroid tumors, which can lead to increased calcium secretion.
Other health conditions: Calcium levels may also indicate conditions such as cancer, liver cirrhosis, or vitamin D deficiency, as these affect blood calcium levels.

Recommended groups

Individuals with bone problems: Such as osteoporosis or frequent fractures, to assess calcium levels and bone health.
Individuals with unexplained symptoms: Such as bone or muscle pain, fatigue, or general weakness, which may indicate calcium level issues.
Patients undergoing chemotherapy or radiation therapy: Especially those treated for certain types of cancer, as treatments can affect calcium levels.
Individuals with chronic diseases: Such as kidney diseases, which can impact calcium balance in the body.
Patients with a family history of endocrine disorders: Such as parathyroid gland issues, as there may be a predisposition to calcium regulation problems.
Individuals on low-calcium diets: Or those with malnutrition, to determine if calcium levels need evaluation.
Individuals with certain health conditions: Such as diabetes or heart disease, which can affect mineral balance in the body.

Symptoms indicative

Bone or joint pain: Persistent or chronic pain in bones or joints without a clear cause.
Fatigue or general weakness: Ongoing feelings of tiredness or physical weakness, which may indicate calcium deficiency.
Muscle cramps: Frequent muscle contractions or spasms, which may point to calcium level disturbances.
Dizziness or lightheadedness: Feeling dizzy or faint, which may be related to mineral balance in the body.
Mood changes: Unexplained changes in mood, such as depression or anxiety, which may be linked to calcium levels.
Loss of appetite: Sudden decrease in the desire to eat, which may be associated with calcium imbalances.
Digestive issues: Such as nausea or vomiting, which may indicate calcium level disturbances.
Jaundice (yellowing of skin and eyes): May indicate liver problems, which can affect calcium levels in the blood.

Normal Levels

Normal levels: Indicate that blood calcium levels are within the normal range, suggesting good parathyroid function and bone health.
High levels (Hypercalcemia): May indicate issues such as hyperparathyroidism, certain cancers (e.g., breast or lung), kidney disease, or vitamin D toxicity.
Low levels (Hypocalcemia): May indicate vitamin D deficiency, hypoparathyroidism, calcium absorption problems in the intestines, or use of certain medications affecting calcium levels.

Frequently Asked Questions

Short answers to the FAQs published with this service.

What is the Serum Calcium Test?

A blood test that measures total calcium levels in the blood, including protein-bound and free calcium.

Why is this test performed?

It is performed to assess bone health, parathyroid gland function, and detect calcium level disorders.

What are the normal calcium test values?

Normal values vary slightly by laboratory but are generally between 8.5 and 10.5 mg/dL.

Does the test require fasting?

It usually does not require fasting, but consult your doctor for any specific preparations.

Bone and Heart Mineral Check

About this service

Purpose Test

Recommended groups

Symptoms indicative

Normal Levels

What is included?

Conditions and notices

Frequently Asked Questions

References and additional resources

Scientific references

Choose a provider and branch

Let us help you

Didn’t find the service?

Services you might also like

Iron Overload Genetic Test

Smart Neurological Therapy Test

Active Vitamin D (LC-MS/MS) Test

Monitor Thiopental Anesthetic Levels

Your opinion matters

Was this content helpful?

Have a note?