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Vitamin D 25-hydroxy, or 25(OH)D, is a compound produced by the liver as it metabolises both vitamin D2 and v...
The 25-Hydroxy Vitamin D test, also known as the Vitamin D (D2 + D3) test, measures the levels of vitamin D in your blood. Vitamin D is vital for bone health, immune support, and maintaining the balance of calcium and phosphate in the body. This test checks both vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol), offering a complete view of your vitamin D status.While vitamin D can be obtained through sunlight and certain foods, factors such as limited sun exposure, poor diet, medical conditions, and ageing can result in deficiency. Low vitamin D levels are linked to weakened bones, muscle fatigue, poor immune function, and a higher risk of chronic illnesses like heart disease.
Vitamin D 25-hydroxy, or 25(OH)D, is a compound produced by the liver as it metabolises both vitamin D2 and vitamin D3. It serves as the main circulating form of vitamin D in the blood. Notably, it is considered the best indicator of vitamin D status in the body.
Consult with your doctor about any specific instructions that might be relevant to your health condition before going for a test.
Inform your doctor about vitamin D or calcium supplements, as they may affect results.
Share information about sunlight exposure or lifestyle, as it influences vitamin D levels.
Fasting is not required for this test.
A blood sample is collected from a vein in the arm.
Inform the healthcare provider if you have bone disorders, kidney disease, or hormonal conditions.
Generally, there's no need for fasting or any special dietary restrictions before the test.
The contents of this website are for informational purposes only and not intended to be a substitute for professional medical advice, diagnosis, or treatment. Please seek the advice of a physician or other qualified health provider with any questions you may have regarding a medical condition. Do not disregard professional medical advice or delay in seeking it because of something you have read on this website.
