Can I, at least, drink water while fasting for a blood test?
Yes you may have water
Last updated on 23 Feb 2023
No it is not recommended to have tea or coffee before blood test
One may not get the best results
If you are not undergoing fasting blood sugar test then you can have water and light snacks
It means that either you are dehydrated or your blood veins have collapsed for the time being making it difficult to draw blood
Complete Blood Picture, Complete Blood Profile, CBP
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