Originally Posted by
Strongblood
I assume you are referring to UGL brands of testosterone. There are several factors that come into play. There are many different oils that are used to make injectable testosterone and some oils are tolerated better than others, cleanliness during production, cleanliness of the raw testosterone being used, and cleanliness of the needle and syringe. It certainly doesn't mean your gear is bad if you have no post injection pain. Blood work is the only way to see how good your test is.