How long does a steriod injections stay in your system
From 1 week to 18 months depending on the substance. It all depends on your body, dosage and for how long you may have ran the anabolic steroid.ow long does it take for the Contraceptive injections to get out of your system? It takes an average of 9 to 10 months for fertility to return after the last shot. By 18 months essentially all women will have returned to whatever level of fertility they ha â¦ d to start with.