human
Is it safe to use a syringe that has been used for someone else before?
assistant
It depends on the type of syringe and the medical condition of the person who used it. In general, using a syringe with blood or other bodily fluids is not recommended because it can transmit infections like HIV and hepatitis. If you are unsure about the safety of a particular syringe, it is best to contact your doctor for advice.