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What is considered "several hours" of fasting for a blood test?
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- jLv 51 decade agoFavorite Answer
Assuming you're having the test done first thing in the morning - nothing after midnight.
- gamereaper88Lv 41 decade ago
It depends on the blood test.
Usually it will say.
Cholesterol tests I have gone for were for a 12 hour fast.
Other tests (not cholesterol) I have gone for were only 6 or 9 hours.
Call your doctor or the lab you are going to go to for the blood draw and ask them.
Source(s): Life. - Anonymous1 decade ago
6 hours
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