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Vitamin D

Vitamin D Test - Price, Purpose, Procedure, Range, & More

March 27, 2025
3 Min Read

Vitamin D is essential for the body. It helps in calcium absorption, keeps bones strong, and boosts immunity. Many people in India have low vitamin D levels. Doctors often suggest a vitamin D test to check if you are deficient. Low vitamin D can cause serious health problems over time. It is essential for overall well-being and affects many bodily functions. Understanding why you need this test and how it helps is necessary for your health.
 

Why is Vitamin D important?

  • It keeps bones strong and prevents fractures.
  • Supports the immune system and fights infections.
  • It helps in muscle function and reduces weakness.
  • It improves mood and reduces the risk of depression.
  • Important for heart health and overall well-being.
  • It may help prevent certain types of cancers.
  • Essential for proper brain function and mental clarity.
  • Reduces inflammation in the body, helping with chronic pain.
  • It helps control blood sugar levels, reducing diabetes risk.
  • Plays a role in weight management and metabolism.
  • It improves sleep quality and helps with relaxation.
  • Supports reproductive health in both men and women.
  • Helps in faster recovery from illnesses and surgeries.


Vitamin D is necessary for many essential body processes. A deficiency can lead to various problems, so it's important to monitor your levels.


Who should get a vitamin D test?

  • People who feel tired all the time.
  • Those who have weak bones or joint pain.
  • People with hair loss or muscle pain.
  • Individuals who stay indoors most of the time.
  • Those with digestive issues may absorb less vitamin D from food.
  • Older adults, as vitamin D absorption decreases with age.
  • Pregnant women, since vitamin D is crucial for baby development.
  • For people with dark skin, melanin reduces vitamin D production.
  • For individuals with obesity, excess fat can lower vitamin D levels.
  • Those with kidney or liver diseases, as these organs process vitamin D.
  • Vitamin D plays a role in immune regulation in people with autoimmune conditions.
  • Those who follow a strict vegetarian or vegan diet, as plant-based foods, have lower vitamin D content.
  • Individuals who experience frequent colds, flu, or infections.
  • Those experiencing frequent headaches on top of their head or migraines.


Getting tested early can help prevent serious health complications. If you have any of these symptoms or risk factors, checking your vitamin D levels is a good idea.

 

Types of Vitamin D tests

There are two main types of vitamin D tests:

  1. The 25-hydroxy vitamin D test or 25(OH)D is the most common test for checking total vitamin D levels in the blood.
  2. 1,25-dihydroxy vitamin D test: This test is not standard. It is used when doctors suspect kidney issues or rare health problems.


How is the test done?

  • A small amount of blood is taken from a vein in your arm.
  • It takes just a few minutes.
  • No special preparation is needed in most cases.
  • Results usually come in 24-48 hours.
  • Some labs offer home sample collection for convenience.
  • Fasting is not required for this test.
  • The test is safe, and there are no significant side effects.
  • It is recommended that the test be done in the morning for better accuracy.
  • Home testing kits are available, but lab tests provide the most reliable results.


Normal range of vitamin D

  • Deficient: less than 20 ng/ml
  • Insufficient: 20-30 ng/ml
  • Sufficient: 30-100 ng/ml
  • Toxic: more than 100 ng/ml
  • Ideal levels vary slightly based on age and health conditions.


Keeping your levels in the sufficient range is essential for overall health. If your levels are too low or too high, your doctor will guide you on what to do next.


How much does a vitamin D test cost in India?

  • The price of a vitamin D test in India varies.
  • It usually costs between Rs. 500 to rs. 2000.
  • Prices may depend on the city and the lab you choose.
  • Home testing services such as TruePal are available in some places.
  • Some insurance policies may cover this test.
  • Discounts are often available during health checkup camps.
  • Government hospitals may offer tests at lower rates.
  • Private labs often have package deals that include vitamin D and other essential tests.
  • Online booking services sometimes provide discounts on home collection.


What happens if vitamin D is low?

  • Weak bones and a higher risk of fractures.
  • Frequent infections and low immunity.
  • Muscle pain, cramps, and weakness.
  • Feeling tired, lazy, or depressed.
  • Increased risk of heart disease and diabetes.
  • Higher chances of osteoporosis in older adults.
  • Slower healing of wounds and injuries.
  • Possible fertility issues in both men and women.
  • Higher risk of autoimmune diseases like rheumatoid arthritis.
  • Poor sleep quality and increased risk of insomnia.
  • Increased risk of hypertension and high blood pressure.
  • May contribute to chronic pain conditions.
  • Children with severe deficiency can develop rickets.


Low vitamin D levels can cause serious health issues. Early diagnosis and treatment can help prevent these problems.


What is the treatment for vitamin D deficiency?  

The treatment and preventive measures for vitamin D deficiency share the same objective: to achieve and maintain a sufficient vitamin D level in the body.

While you might think about increasing your intake of vitamin D-rich foods and exposure to sunlight, your healthcare provider may suggest vitamin D supplements.

There are two types of vitamin D: D2 and D3. D2 (ergocalciferol) is derived from plants, while D3 (cholecalciferol) is sourced from animals. A prescription is necessary for D2, whereas D3 can be purchased over the counter. Your body absorbs D3 more readily than D2.

Consult your healthcare provider to determine if you require a vitamin supplement and the appropriate dosage.


Who is most vulnerable to vitamin D deficiency?  

In addition to health issues that can lead to a lack of vitamin D, various biological and environmental factors increase the likelihood of deficiency, including:

  • Age: The capacity of your skin to produce vitamin D diminishes as you age, making individuals over 65 particularly susceptible to vitamin D deficiency. Infants are also at risk of inadequate vitamin D intake, especially those who are exclusively breastfed, as breast milk offers minimal vitamin D.
  • Skin colour: Individuals with darker skin find it more challenging to synthesise vitamin D from sunlight than those with lighter skin, placing them at a greater risk for deficiency.
  • Mobility: Those who are homebound or seldom venture outside, such as residents of nursing homes and similar facilities, miss out on sunlight for vitamin D synthesis, increasing their risk of deficiency.


How to increase vitamin D levels?

  • Get sunlight: spend at least 20 minutes in the sun every day.
  • Eat vitamin D-rich foods: include eggs, fish, dairy, and mushrooms in your diet.
  • Take supplements only if your doctor recommends them.
  • Stay active: regular exercise helps in better vitamin absorption.
  • Use fortified foods: drink fortified milk or eat vitamin D-fortified cereals.
  • Maintain a healthy weight: obesity can lower vitamin D levels.
  • Limit alcohol and smoking: these can reduce vitamin D absorption.
  • Get regular checkups: monitor your vitamin D levels for overall health.
  • Consume nuts and seeds: almonds, walnuts, and flaxseeds support vitamin D metabolism.
  • Eat more whole grains: oats and brown rice provide essential nutrients for bone health.
  • Reduce stress: high stress can interfere with vitamin D function.
  • Drink enough water: staying hydrated helps with overall nutrient absorption.
  • Avoid excessive caffeine: too much coffee or tea can interfere with vitamin absorption.
  • Consult a doctor before taking high-dose supplements: too much vitamin D can be harmful.


How frequently should we assess our vitamin D levels?

Over time, you may not consume the vitamins in the suggested amounts. This is likely true if you follow a strict vegan diet because most natural sources, such as fish and fish oils, egg yolks, fortified milk, and beef liver, are derived from animals. Therefore, it is advisable to monitor your vitamin D levels routinely.

The most accurate method for assessing the amount of vitamin D in your body is the 25-hydroxy vitamin D blood test. For individuals in good health, a suitable range is between 20 ng/mL and 50 ng/mL. A level below 12 ng/mL indicates a deficiency in vitamin D.

As mentioned earlier, vitamin D is crucial for various bodily functions. Furthermore, instances of vitamin D deficiency have increased in recent years. Thus, check your vitamin D levels as part of your regular full-body checkups, which can be performed every six months or at least once annually.

 

Vitamin D deficiency and weight-loss surgery  

Surgical procedures for weight loss that shrink the stomach and/or bypass sections of the small intestine, like gastric bypass surgery, can hinder your body's ability to absorb enough nutrients, vitamins, and minerals.

If you have undergone weight-loss surgery, you must have regular check-ups with your healthcare provider to assess your vitamin D and other nutrient levels. You will likely need to take vitamin D and additional supplements for the rest of your life.

 

Comparison table about Vitamin D2 vs. D3


Medications that can cause vitamin D deficiency  

Certain medications may reduce vitamin D levels, such as:

  • Laxatives.  
  • Steroids (like prednisone).  
  • Cholesterol-lowering medications (such as cholestyramine and colestipol).  
  • Antiseizure medications (including phenobarbital and phenytoin).  
  • Rifampin (used for tuberculosis).  
  • Orlistat (a weight-loss medicine).  
  • Always inform your healthcare provider about your medications, supplements, and herbs.

Final thoughts

Vitamin D is essential for good health. A simple blood test can help you determine if you have enough. Get tested if you feel weak, tired, or have bone pain. Early detection can help prevent serious health problems. Check your vitamin D levels with a test today. Get a home health checkup with TruePal for easy and accurate results. Taking care of your health today ensures a better future.


FAQs

1. What exactly is a Vitamin D test?

A vitamin D test determines the level of vitamin D in your blood. Vitamin D aids in absorbing calcium, which is necessary for forming strong bones and teeth. It also helps maintain the proper functioning of your muscles, nerves, and immune system. 

2. What is the Vitamin D test explicitly used for?

A vitamin D test checks the amounts of vitamin D in your blood. The test is frequently performed if your doctor suspects that low vitamin D levels could cause a bone or other health problem you have. 

3. What is the average price of a vitamin D test in India?

Vitamin D (25-hydroxy) tests in India typically cost between ₹600 and ₹1600; however, prices may vary by city and clinic. 

4. Does Vitamin K2 improve Vitamin D absorption?

When Vitamin D3 is combined with Vitamin K2, its potency increases dramatically. Vitamin K2 ensures that calcium obtained through the action of Vitamin D3 is directed to our bones and teeth, rather than our arteries and soft tissues.

5. Does Magnesium deficiency lower Vitamin D levels?

Magnesium aids liver and kidney function and is required for vitamin D absorption. The enzymes that metabolize vitamin D all appear to require magnesium.

6. Should Vitamin D be taken with food or on an empty stomach?

Vitamin D is fat-soluble, therefore, it's better to avoid taking it on an empty stomach. For best results, take it after a substantial meal, ideally one that includes fat-containing foods such as nuts, seeds, and eggs.

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