The patient should be fasting (nothing to eat or drink) for 10 to 24 hours before the blood test and should not smoke for 24 hours beforehand.
The catecholamines test can be performed on either blood or urine.
There is no need to fast for a bun and creatinine test.
You do not need to fast for a chickenpox blood test.
no u dont need to fast
For "wbc" or "white blood cell" test, you do NOT need to fast.
No, you don't need to fast for the blood test for chickenpox.
no
catecholamine
yes
Yes
No, you do not.
no