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Serum Calcium

Serum Calcium near me in Delhi

Also referred as
Calcium blood test
S. Calcium
Serum Ca
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The Serum Calcium test measures the levels of calcium present in the blood and is available at an affordable price in Delhi with Tata 1mg labs. Calcium is a mineral responsible for many vital functions, such as maintaining bone strength, helping the nerves work correctly, cell signaling, muscle contraction, regulating heart rhythms, and blood clotting. Abnormal calcium levels can lead to complications like kidney disease, bone disease, and multiple organ tumors. 

Your doctor may suggest the Serum Calcium test if you experience symptoms suggestive of abnormal calcium levels, such as weakness, fatigue, excessive urination and thirst, nausea, stomach pain, constipation, irregular heartbeat, brittle nails, weak and brittle bones, muscle cramps, irritability, or confusion. This test can also monitor the treatment response in patients with known abnormal calcium levels and critically ill patients suffering from cancer or kidney disorders.

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Overnight fasting required for 8 to 12 hours
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Understanding Serum Calcium

Calcium is one of the most common minerals in the body. In your blood, calcium exists in two forms: ionized (free) and bound (attached to proteins like albumin). The Serum Calcium measures total calcium, which includes both types.

The Serum Calcium test is usually done if you have:

  • Muscle cramps or spasms
  • Tingling in your hands or feet
  • Fatigue or weakness
  • Bone pain
  • Irregular heartbeat
  • Confusion
  • Perioral numbness
  • Tetany
  • Seizures

Calcium blood test also helps diagnose and monitor calcium metabolism problems, parathyroid or kidney diseases, bone disorders, and how treatments are working in very ill patients.

Low calcium levels are called hypocalcemia. This can happen due to:

  • Vitamin D deficiency
  • Kidney problems
  • Low parathyroid hormone
  • Hypoparathyroidism (post-thyroid/parathyroid surgery, autoimmune)
  • Chronic kidney disease (CKD)
  • Acute pancreatitis
  • Sepsis & critical illness
  • Hypoalbuminemia (pseudo-hypocalcemia)
  • Magnesium deficiency
  • Medications: bisphosphonates, calcitonin, phenytoin

High calcium levels are called hypercalcemia. This can occur because of:

  • Overactive parathyroid glands
  • Certain cancers
  • Kidney disease
  • Too much calcium intake
  • Primary hyperparathyroidism
  • Malignancy (lytic bone lesions, myeloma)
  • Excess Vitamin D or calcium intake
  • Sarcoidosis / granulomatous disorders
  • Thiazide diuretics
  • Immobilization
  • Thyrotoxicosis

An overnight fast (8-12 hours) is preferred but not mandatory for serum calcium test preparation. Always tell your doctor about any medicines or supplements you take, as these can affect calcium levels. 

Test results can vary slightly between labs. Talk to your doctor to understand your test results. Your doctor will suggest the best treatment or lifestyle changes based on your test results.

What Are the Symptoms or Conditions That May Require the Serum Calcium Test?

You may need the Serum Calcium test if you have:

  • Muscle cramps or spasms
  • Tingling in hands or feet
  • Fatigue or weakness
  • Bone pain
  • Irregular heartbeat
  • Confusion
  • Kidney or parathyroid problems 
  • Long-term use of calcium or vitamin D supplements

When Would I Need the Serum Calcium Test?

You might need this test:

  • As part of your regular health checkup
  • To check if your body has too little or too much calcium
  • If you have muscle cramps, bone pain, or feel weak
  • To see how treatment is working for low or high calcium levels
  • To check calcium balance if you have kidney or parathyroid problems

How Do I Prepare for the Serum Calcium Test?

Do I need to fast or stop any medications before the Serum Calcium test?

Overnight fasting( 8-12 hours) is usually preferred for this test. However, it is not mandatory. Inform your doctor about any medications or supplements you are taking, as these may affect the test results. Your doctor will guide you if any temporary adjustments are needed before the test.

How is the Serum Calcium done?

  • The Serum Calcium is done by collecting a small amount of blood from a vein, usually in the arm. 
  • The procedure is quick, minimally invasive, and generally causes only slight discomfort.

What happens during the Serum Calcium test?

  • You will sit comfortably with your arm resting on a flat surface or armrest.
  • An elastic band (tourniquet) will be tied around your upper arm to make your veins easier to see and find.
  • The phlebotomist will select a suitable vein for drawing blood.
  • The skin will be cleaned with an alcohol wipe to prevent infection.
  • A thin, sterile needle will be gently inserted into the vein to collect a small amount of blood into a test tube.

What happens after the Serum Calcium test?

  • Once enough blood is collected, the tourniquet is released and the needle is removed.
  • A cotton ball or gauze is placed on the site, followed by a small bandage or dressing to stop any bleeding.
  • The blood sample is carefully labeled with your details and sent to the laboratory for analysis.
  • You can resume your daily routine after the test is done.

Is the Serum Calcium test painful?

No, the Serum Calcium test is generally safe and painless. You may feel slight discomfort during blood sample collection. However, the chances of serious complications are extremely rare.

How Long Does the Serum Calcium Test Take?

The procedure is quick, simple, and safe. It requires only a small blood sample and is completed within a short duration.

When Will I Get the Results?

The availability of your test report may vary depending on your location and the laboratory where the test is conducted. In general, Tata 1mg provides the results within the stipulated time after sample collection.

When Should I Consult a Doctor After the Test?

You should consult your doctor if:

  • Calcium levels are above or below the normal range.
  • You experience muscle cramps, fatigue, or irregular heartbeat.
  • You have a known parathyroid or kidney disorder.
  • You take supplements affecting calcium balance.

Are There Any Risks Associated with the Serum Calcium Test?

The Serum Calcium test is safe, with only minimal and short-lasting effects like:

  • Small bruise, pinch, or slight tenderness at the puncture site
  • Occasional lightheadedness if you are sensitive to needles or blood
  • Rarely, infection or blood vessel injury

Note: If you have a bleeding disorder or take blood thinners, inform the phlebotomist beforehand.

Lifestyle Tips To Maintain Healthy Calcium Levels  

💧 Hydration: Drink plenty of water to help the kidneys regulate calcium balance.

🥗 Eat Healthy: Include calcium-rich foods like dairy, leafy greens, nuts, and fortified cereals in your diet.

🚴‍♀️ Activity: Engage in regular exercise to strengthen bones and enhance calcium metabolism.

😴 Lifestyle: Get enough good-quality sleep, as poor sleep can affect hormone balance and calcium regulation.

👨‍⚕️ Talk to Your Doctor (consultation): Take calcium or vitamin D supplements only under medical supervision.

🍺 Habits (smoking and alcohol): Avoid smoking and limit alcohol consumption to maintain bone and calcium health.

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What does Serum Calcium measure?

The Serum Calcium test measures the calcium level in your blood. Most of your body’s calcium (about 99%) is stored in bones and teeth to keep them strong. The rest (1%) circulates in the blood and helps your muscles move, nerves work, blood to clot, and heart to keep a steady rhythm.

Calcium in blood comes in two forms:

  • Bound calcium, attached to proteins like albumin
  • Ionized (free) calcium, which is active and helps many body functions

This test measures total calcium (both bound and ionized). This test cannot show if you have enough calcium in your diet. It also cannot detect bone diseases like osteoporosis. The body keeps blood calcium levels steady. It does this by taking calcium from bones during mild shortages.

What Do the Results Mean?

Pathological Factors 

Test Parameter

Interpretation (possible causes)

Low Levels

  • Underactive or damaged parathyroid glands (hypoparathyroidism and pseudohypoparathyroidism)

  • Chronic kidney disease with toxin buildup

  • Poor absorption of calcium or vitamin D

  • Liver problems like obstructive jaundice

  • Bone diseases such as osteomalacia and rickets

  • Some medicines, including cancer drugs, calcitonin, and certain diuretics

  • Low magnesium or protein levels in blood

High Levels

  • Overactive parathyroid glands (primary or secondary hyperparathyroidism)

  • Acute or chronic kidney failure, including after kidney transplant

  • Bone loss due to malabsorption or osteoporosis

  • Certain cancers, especially breast, lung, and kidney tumors

  • Medicines like vitamin D or A overdose, diuretics, hormone therapy (estrogen, androgen), tamoxifen, or lithium

Key: ⇧: Indicates High Levels , ⇩: Indicates Low Levels

Physiological Factors

🧒 Age: Older adults may have lower calcium levels due to reduced bone density and hormonal changes.

🚺 Gender: Women, especially after menopause, are more prone to calcium loss due to lower estrogen levels.

🫄 Pregnancy and Lactation: Higher calcium demand during these phases may lower calcium levels if intake is inadequate.

💊 Hormonal Influence: Parathyroid hormone (PTH), vitamin D, and calcitonin regulate calcium balance; any imbalance can alter calcium levels.

Lifestyle Factors

🥗 Diet: Inadequate intake of calcium-rich foods can lower calcium levels.

🍷 Alcohol Consumption: Excessive alcohol interferes with calcium absorption.

🚬 Smoking: Smoking may affect bone metabolism and calcium utilization.

☀️ Sun Exposure: Insufficient sunlight can reduce vitamin D levels, affecting calcium absorption.

Disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult your healthcare provider for personalized guidance.

What Do Normal Calcium Levels Mean?

Normal results indicate that your calcium metabolism is functioning properly, supporting bone health, nerve transmission, and muscle contraction.

What Do High Levels of Calcium Indicate?

High calcium levels (hypercalcemia) may indicate:

  • Overactivity of the parathyroid glands
  • Excessive vitamin D intake
  • Underlying health issues, such as certain cancers or bone disorders. 

Your doctor may recommend further tests to identify the underlying cause.

What to Do if Your Calcium Is Higher Than Normal?

If your calcium levels are higher than normal, do not self-medicate or stop supplements abruptly. Your doctor will check your health, medications, and history before deciding what to do next. In most cases, adjusting supplements or treating the root cause resolves the issue.

What Do Low Levels of Calcium Indicate?

Low calcium levels (hypocalcemia) may indicate:

  • Nutritional deficiencies,
  • Kidney or parathyroid dysfunction
  • Poor vitamin D absorption

Treatment involves calcium or vitamin D supplementation and dietary adjustments under medical supervision.

Can Calcium Results Be Inaccurate?

Yes. The Serum Calcium test results can sometimes be inaccurate. Factors that may affect the results include recent intake of calcium or vitamin D supplements, dehydration, pregnancy, hormonal therapy, and certain medications like diuretics or anticonvulsants. Minor variations in how the lab handles the sample may also impact accuracy. It is important to share your medical history and current medicines with your doctor to get a clear understanding of your calcium levels.

What Factors Can Affect Serum Calcium Results?

Though it is a reliable test, some circumstances can influence accuracy:

  • Intake of calcium/vitamin D supplements
  • Kidney or parathyroid diseases
  • Medications like lithium or diuretics
  • Prolonged immobilization
  • Hormonal imbalances
  • Sample contamination with EDTA causes falsely low calcium
  • Use plain or serum separator tubes; avoid EDTA/oxalate/citrate tubes
  • Prolonged tourniquet application (>1 min) affects results
  • Fasting sample preferred but not mandatory (8–12 hours)
  • Transport the sample at room temperature; analyze ionized calcium quickly
  • Low albumin affects total calcium; corrected or ionized calcium is preferred in specific cases (ICU, CKD, pregnancy)

What Follow-Up Tests May Be Required?

Based on your Calcium test results, your doctor may recommend additional tests to determine the cause of abnormal calcium levels and evaluate bone, kidney, or parathyroid health. These tests may include:

Table: Tests Commonly Ordered Alongside Serum Calcium Test

Test Name

Primary Purpose

Ionized Calcium Test

Measures the active (free) form of calcium 

Urine Calcium Test

Evaluates calcium loss through urine 

Vitamin D Test

Checks for vitamin D deficiency

Parathyroid Hormone (PTH) Test

Checks parathyroid gland function

Electrolyte Panel

Assesses minerals affecting calcium 

Kidney Function Test (KFT) with Electrolytes

Assesses kidney function and electrolyte balance 

FAQs related to Serum Calcium in Delhi

A phlebotomist (a trained professional to perform blood draws) will clean your skin using an antiseptic alcohol cotton swab or wipe and take blood samples from your vein using a needle. The blood sample will be stored safely and transported to the laboratory for analysis.
There is usually no risk associated with this test. However, some people may feel a slight sting while the needle is pricked and may experience some bleeding that is normal and usually not bothersome. Some people may experience slight swelling or bruising at the site of the needle prick. Applying ice 3-4 times daily for about a week may help reduce swelling and bruising. If it does not get better, consult your doctor.
Yes. In Delhi, you can schedule the Serum Calcium test near you with Tata 1mg Labs. The test is easy to book, cost-effective, and available with a comprehensive report.
Yes, Tata 1mg Labs offers a home sample collection facility for the Serum Calcium test in Delhi. You can also select the date and time for sample collection and schedule the test at your convenience.
If you want to schedule the Serum Calcium test with Tata 1mg Labs in Delhi, the procedure is fairly easy and hassle-free. Follow these steps to book a test: 1). Visit the Lab Tests section on the Tata 1mg website. 2). Add the test you want in the cart. 3). Pick a time and date slot according to your convenience; however, do consider the necessary prerequisites while scheduling a test. 4). You will receive a notification with all the details once the test is scheduled.
Tata 1mg Labs is a pocket-friendly platform for booking lab tests. In Delhi, the Serum Calcium test is available at an affordable price of Rs. 189.
At Tata 1mg Labs, we understand the importance of timely results. We strive to provide fast turnaround times for test results, allowing you to promptly get the information you need. On average, we take 15 hours to provide the reports of the Serum Calcium test in Delhi.

Serum Calcium test price for other cities

Price inBangaloreRs. 219
Price inKolkataRs. 159
Price inNew DelhiRs. 189
Price inHyderabadRs. 219
Price inMumbaiRs. 219

How does home sample collection work?

References

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