A member asked:

What are the signs and symptoms of vitamin deficiency?

A doctor has provided 1 answer
Dr. Steven Charlap answered

Specializes in Holistic Medicine

Blood test: The only way to know definitively if you have a deficiency is to check your blood. Vitamin d, b12and folate are routine tests available in most labs and covered by insurance. The other vitamins usually require a special labs, are more expensive, and may not be covered under insurance.

Answered 3/3/2016

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