Pinning injection: you need to inject with a 1 1/2" 25 gauge 3 cc syringe for when you inject in your glutes, Also grab like 50 19 or 21 gauge needs ONLY the point of this is for when your do come's to take your next shot you just twist off the 25 gg needle and then twist on the 19 gauge and then push pin into bottle and pull and it will be able to make oil flow out very fast into syringe. After you have you correct dosage loaded in pin then you twist of 19 gg and twist back on 25 gg if you doing glute shot's. If you decided you want to do should shot you do same thing with 19gg for pulling but to inject in shoulder's twist on 5/8in 28 gauge needle as we;;
Testosterone can be administered parenterally , but it has more irregular prolonged absorption time and greater activity in muscle in enanthate , undecanoate , or cypionate ester form. These derivatives are hydrolyzed to release free testosterone at the site of injection; absorption rate (and thus injection schedule) varies among different esters, but medical injections are normally done anywhere between semi-weekly to once every 12 weeks. A more frequent schedule may be desirable in order to maintain a more constant level of hormone in the system.  Injectable steroids are typically administered into the muscle, not into the vein, to avoid sudden changes in the amount of the drug in the bloodstream. In addition, because estered testosterone is dissolved in oil, intravenous injection has the potential to cause a dangerous embolism (clot) in the bloodstream.