science
Lab Test
Vitamin Deficiency Panel: What Your Results Mean
Vitamin deficiency panels check the levels of essential vitamins in your blood. Deficiencies are extremely common worldwide and can cause a wide range of symptoms including fatigue, depression, bone pain, neurological problems, and increased disease risk.
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What It Tests
Vitamin D (25-OH), Vitamin B12, folate (B9), Vitamin B6, Vitamin A, Vitamin E, and sometimes Vitamin K.
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Why It's Ordered
Vitamin panels are ordered for unexplained fatigue, depression, bone pain, hair loss, neuropathy, malabsorption conditions, or when following a restricted diet (vegan, vegetarian).
Markers in This Test
Frequently Asked Questions
Which vitamin deficiency is most common? expand_more
Vitamin D deficiency affects over 1 billion people globally. B12 deficiency is the second most common, particularly in older adults and vegetarians/vegans.
Can I get all vitamins from food alone? expand_more
Most people can get sufficient vitamins from a varied diet. However, vitamin D (limited food sources) and B12 (absent in plant foods) often require supplementation for certain populations.
Do I need to fast for vitamin tests? expand_more
Fasting is not generally required for vitamin tests, though some labs recommend it. Vitamin D and B12 levels are not significantly affected by recent meals.
How long does it take to correct a vitamin deficiency? expand_more
With appropriate supplementation, B12 levels can improve within weeks. Vitamin D levels typically take 2–3 months to normalize. Re-testing is recommended after 3 months of supplementation.
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