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You cannot eat or drink anything for 8 to 10 hours before having a folate blood test. This test is done to check for anemia, malnutrition, and to ensure birth defects do not happen to a fetus.

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Q: How long do you have to fast before a folate blood test?
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Related questions

How long do you fast before having blood drawn?

It rather depends on why blood is being drawn?

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Twelve hours, according to my cardiologist.

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As long as you don't put sugar or honey in it it'll be ok

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