Once you've begin TRT, the typical time to test levels is immediately prior to an injection. You want to capture trough readings so that you and your doctor can determine how efficiently your protocol is sustaining therapeutic serum levels across the week.
In my opinion, the day you select should be consistent for future lab work as well. I always plan on Monday mornings before injection and its easier for me to fast Sunday night to Monday morning.
In my opinion, the day you select should be consistent for future lab work as well. I always plan on Monday mornings before injection and its easier for me to fast Sunday night to Monday morning.