A member asked:

Is fasting required for b12 and folate. ? doctor drew labs and i had lunch. he said it didnt matter ? and what about iron panel plus ldh?

2 doctors weighed in across 2 answers
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

No, blood for those labs can be drawn at any time, no need for fasting.

Answered 2/16/2023

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Agree with Dr. Le. The LDH may be affected some by the physical activity and eating.

Answered 2/16/2023

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