Vitamin D Test (25-OH Vitamin D) in New Town, Kolkata
At Pure Bliss Healthcare Centre, Action Area 2, New Town.
What the Vitamin D Test (25-OH Vitamin D) measures
This test measures 25-hydroxy vitamin D (25-OH vitamin D), the form doctors use to judge whether you have enough vitamin D. Vitamin D is made in the skin in sunlight and taken in from a few foods and supplements; the liver turns it into 25-OH vitamin D, which stays in the blood for weeks, so the level reflects your sun exposure and intake over roughly the past two months. Vitamin D helps the body absorb calcium and keeps bones and muscles working normally. Low levels are commonly found in Indian cities despite the sunshine, because of indoor working hours, covered skin and diet. Deficiency is often silent, but it can contribute to bone pain, muscle weakness and aches, and over time to softer bones and a higher risk of osteoporosis. Doctors order the test for these symptoms, for people at higher risk, and to check whether supplements are working. Levels can also become too high with large doses of supplements, which is one reason to test before taking high doses for long. The active hormone, 1,25-dihydroxy vitamin D, is a different test used for specific conditions and is not the usual test for deficiency.
Price: the Vitamin D Test (25-OH Vitamin D) costs ₹750 at Pure Bliss (MRP ₹938), with the sample collected at our Action Area 2, New Town centre or at your home.
Who this test is for
- Bone pain, muscle weakness, aches or cramps
- Older adults, women after menopause, and anyone with osteoporosis or a fracture after a minor fall
- Little sun exposure, obesity, a gut condition that affects absorption, or kidney or liver disease
- Checking the level after a course of vitamin D supplements
How to prepare, the sample, and when to expect the report
Preparation
No fasting is needed. Keep taking any vitamin D supplements as prescribed unless your doctor says otherwise, and tell us the dose and, for weekly sachets or capsules, when you took the last one.
Reporting time
Within 24 hours.
Sample
Blood, from a vein in the arm (serum).
Reading the result
Ranges vary by lab; your report shows the lab's reference range next to each value. Laboratories and guidelines use slightly different cut-offs for deficiency, insufficiency and sufficiency. Your report states the bands the processing lab uses. Ask your doctor to interpret the result.
Centre or home collection NABL-accredited Redcliffe Labs collection centre Most routine reports within 24 hoursHow collection works →
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Vitamin D Test (25-OH Vitamin D) — common questions
Booking, preparation and reporting for the Vitamin D Test (25-OH Vitamin D) at Action Area 2, New Town.
Do I need to fast for a vitamin D test?
No. The test can be done at any time of day, with or without food.
Which vitamin D test should I book?
For checking deficiency, this 25-OH vitamin D test is the standard one. The 1,25-dihydroxy vitamin D test and the advanced test that separates D2 and D3 are for specific situations your doctor will name.
When should I recheck after starting supplements?
Doctors commonly recheck after about three months, as the level takes several weeks to settle on a new dose. Follow the timing your doctor gives you.
Can vitamin D be too high?
Yes, though it is uncommon and almost always caused by taking large doses of supplements for a long time. Very high levels can raise blood calcium, so take high-dose vitamin D only as prescribed.