Veterinary Injection Needles--How To Operate Subcutaneous Injection To Return Blood

If there is blood back, you can pull out the veterinary needle for a little bit and try a test again. After seeing no blood back, you can inject the liquid medicine. After the injection, press the needle hole with the alcohol cotton ball in your left hand, and quickly pull out the needle. For the safety of the surgeon, you can also hold the injection needle in the right hand and pierce the injection site quickly and forcefully, then hold the needle in the left hand and the syringe in the right hand to connect the two, and then inject the liquid medicine.