It depends on the type of blood test. For fasting sugar tests it can have an affect. Fasting longer than 12 to 14 hours will cause your body to start utilizing glycogen that is primarily stored in your muscles and that can affect blood tests for fasting sugar.
that depends how fast you can fast when fasting for a fasting blood test for metabolic functions.
No, you don't need to fast for the blood test for chickenpox.
No, you do not have to fast before that test. You can have the blood draw done at any time.
No you do not have to fast for it.
yes
that depends how fast you can fast when fasting for a fasting blood test for metabolic functions.
No, you don't need to fast for the blood test for chickenpox.
You do not need to fast for a chickenpox blood test.
No. Fasting is only required for lab tests which examine lipids, sugars (blood glucose, glycohemoglobin, etc.) and amino acids.
No, you do not have to fast before that test. You can have the blood draw done at any time.
I am pretty sure that a blood test breaks your fast, either that or it almost breaks your fast.
For "wbc" or "white blood cell" test, you do NOT need to fast.
No you do not have to fast for it.
Typically, you need to fast for 8-12 hours before a fasting blood test, although this can vary depending on the specific test your doctor has requested. It's important to follow your healthcare provider's instructions regarding fasting before your blood test.
yes
At least 12 hours before getting your blood taken. It is ok to have small sips of water
Yes you do!