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Originally Posted by
booku
IM thighs: 5/8-1" depending on body fat %
IM delts: 5/8-1" depending on bodyfat %
SQ is really variable. some say go 25/26 gauge, others go as high as 29 gauge, but anywhere in there should be fine IMO. Needle length really comes down to personal preference and injection technique, but typically anywhere from a 5/16", 3/8", 1/2", or 5/8" pin will do.
If you are injecting long esters (enanthate, cyp) there is no reason to pin ED. Injection scheduling does not effect absorption, it effects E2 due to different peaks and trough levels of the drug in the bloodstream. It is for this reason why people inject every 3.5 days instead of weekly. Because of the half life of the drug, you get a nice saw tooth pattern in blood levels, ie. smaller peaks and bigger troughs.
Within the 'normal range' is not satisfactory for optimal health and wellbeing. The normal reference range is where 95% of the population falls within. We are trying to achieve what is optimal and not what is acceptable, two entirely different animals. And nobody in the know in TRT would say you need to be in the high end of the testosterone range. Some people feel a ton better in the middle of the range, while others feel better at the top. It all comes down to working with your doctor, follow up blood work, and diet and exercise.