Description
Number of Tests Included:
Single blood test measuring 25-OH Vitamin D.
What is a Vitamin D Test?
A biochemical test that checks the amount of Vitamin D circulating in the bloodstream, helping determine deficiency, insufficiency, or optimal levels.
Purpose of the Test:
Diagnose Vitamin D deficiency
Evaluate bone disorders (osteopenia, osteoporosis)
Assess calcium imbalance
Investigate fatigue, muscle pain, or weakness
Monitor Vitamin D supplementation
Support diagnosis in thyroid or parathyroid disorders
Who Should Get This Test?
Individuals with bone pain or muscle weakness
People with limited sun exposure
Older adults, pregnant women, and children
Individuals with thyroid, kidney, or liver disorders
People with frequent illness or low immunity
Components of the Test:
Serum 25-hydroxy Vitamin D measurement (D2 + D3 combined)
Understanding the Test Report:
<20 ng/mL → Deficient
20–30 ng/mL → Insufficient
30–100 ng/mL → Optimal
>100 ng/mL → Possible toxicity (rare)
Preparation and Procedure:
Routine blood draw
No special preparation required
How is the Test Done?
A blood sample is analyzed using advanced immunoassay or LC-MS/MS methods to measure Vitamin D levels.
Best Time for Test:
Anytime; morning samples preferred.
Booking and Checking Reports:
You can book the Vitamin D test through SDL, opt for home sample collection, and view your reports digitally.