T Nation

Difference Between Peak and Trough?

If peak is at 72 hours how much lower would levels be at trough?

It depend on how fast you metabolize testosterone, but that’s why we do labs at trough. Also peak is within 48 hours.

Graph B

1 Like

It depends how often you inject. Your trough is dependent on your injection frequency.

Once weekly IM,

Everyone is different. The only way to know for sure, is to get tested at peak and trough.

For cypionate Im not sure, but for enanthate with some people the peak can be after 12-14 hours. People think slow esters peak slowly, but that is furthest from the truth.


Oh I believe it, the enanthate was definitely more of a roller coaster ride on an EOD protocol when compared with the cypionate EOD protocol. I’m sure that had to do with the half-life differences.

The cypionate half life in ideal conditions was measures 7-8 days, enanthate 4-5. People falsely believe they are the same, but how can you cave two same esters on the market :smiley:

Once weekly injections is how i got gyno. Switch to at least twice/week. I settled on (and like best) every other day.

1 Like