Vitamin D3 (25-Hydroxy)
Also known as: 25-Hydroxy Vitamin D
How to prepare
You can eat and drink normally before the test.
No special preparation needed.
Tell our phlebotomist about any medicines you take. Don't stop them without asking your doctor.
Wear a loose sleeve so the sample can be taken easily from your arm.
How it works
About this test
This test measures 25-hydroxy vitamin D, the best marker of how much vitamin D your body has stored. Vitamin D helps absorb calcium for strong bones and supports muscles and immunity. Deficiency is very common in India despite plenty of sunshine.
Why is this test done?
- Check for vitamin D deficiency
- Find the cause of bone or muscle pain
- Monitor supplements
- Bone health check in women and elderly
Symptoms — when should you get tested?
- Body ache and bone pain
- Muscle weakness or cramps
- Tiredness
- Hair fall
- Frequent infections
- Low mood
Normal range
Reference ranges differ slightly between labs, methods, age and sex. Always discuss your report with your doctor.
If your result is high
Very high vitamin D (above 100 ng/mL) is usually from taking too many supplements and can raise calcium.
Common reasons- Too many high-dose supplements
If your result is low
Low vitamin D weakens bones and muscles and can cause long-lasting body pain.
Common reasons- Little time in sunlight
- Covered clothing, indoor lifestyle
- Dark skin
- Obesity
- Kidney or liver disease
How is the test done?
- 1Book online
Choose your slot for home collection or a visit to our centre.
- 2Blood sample taken
A trained phlebotomist takes a small blood sample from a vein in your arm with a sealed, single-use needle. It takes about 2 minutes.
- 3Tested in our lab
Your barcoded sample is tested on automated machines with strict quality checks.
- 4Report on WhatsApp
A pathologist checks the result and the report reaches you on WhatsApp and email.
Save more with a health package
This test is also included in these checkups along with many other tests.
Frequently asked questions
15–20 minutes of morning sunlight on arms and face, vitamin D-rich foods, and supplements as your doctor prescribes.
No fasting is needed for this test. You can eat and drink normally.
Your report is usually ready in 24-48 hrs after the sample reaches our lab. We send it on WhatsApp and email, and you can also download it from the Reports page.
Please call our team to confirm whether home sample collection is available for your location and test.
This test needs a blood sample. No special preparation needed.