Nurses don't need to change gloves when drawing blood.

If the operation is standardized, the blood will not stick to the hands. Even if it sticks to your hand, it doesn't matter if you deal with it immediately. Even if there is an infectious disease, as long as there is no wound on the hand, it will be fine. Never stab yourself. Most vacuum blood collection tubes will not drop blood when pulling the needle. Occasionally, blood drops will appear because the negative pressure of the vacuum bottle disappears. Therefore, it is suggested to pull out the needle before the negative pressure of vacuum blood collection tube disappears. So the blood won't flow out.