1. Please be careful not to remove the cap of the blood collection tube before blood collection.
2. All vacuum blood collection tubes should be inverted and mixed immediately for 5-6 times. (Please do not vigorously shake when inverted and mixed to avoid hemolysis).
3. If only one tube is collected with a scalp needle, it may cause insufficient blood collection. In this special case, a syringe can be used to collect blood (or a straight needle can be used to collect blood).
4. The binding time of tourniquet is generally not too long (not more than one minute).
5. When using the scalp needle, please tighten the connection of the scalp needle to avoid air leakage and cause insufficient negative pressure.
6. When the last tube is taken out in advance, the tourniquet should be loosened when the blood line becomes shorter to avoid wasting the patient's blood and causing bleeding.
