All injected T, SC, IM or pellets are 100% absorbed. Might be less effective if shot into a vein and then direct to the liver or kidneys.
You may have had an internal bleed, causing inflammation that may be directly affecting a nerve, or more direct aggravation of the nerve.
Is this the first injection of a new batch/lot for you?
Has this happened more than once from the same vial?
Is your leg swollen and/or hot?
If you press firmly on an injection side after injecting for 10 seconds, that will allow most cut blood vessels to seal off and not bleed. Reduced surface bleed bruises too.
Please to not inject into your gluts, too many critical nerves.