I pin with 28g needles IM in my delt for TRT, and 31g subQ for HCG. Today after my T shot, I picked up my used 28g syringe for my HCG instead of grabbing the new 31g. Realized before I injected, but pushed the HCG back into the vial.
Have I contaminated my HCG just by drawing up the medicine and pushing it back into the vial?
Appreciate any insight!