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:
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Diagnose Vitamin D deficiency
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Evaluate bone disorders (osteopenia, osteoporosis)
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Assess calcium imbalance
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Investigate fatigue, muscle pain, or weakness
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Monitor Vitamin D supplementation
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Support diagnosis in thyroid or parathyroid disorders
Who Should Get This Test?
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Individuals with bone pain or muscle weakness
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People with limited sun exposure
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Older adults, pregnant women, and children
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Individuals with thyroid, kidney, or liver disorders
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People with frequent illness or low immunity
Components of the Test:
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Serum 25-hydroxy Vitamin D measurement (D2 + D3 combined)
Understanding the Test Report:
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<20 ng/mL → Deficient
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20–30 ng/mL → Insufficient
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30–100 ng/mL → Optimal
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>100 ng/mL → Possible toxicity (rare)
Preparation and Procedure:
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Routine blood draw
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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.
