When to Check Levels If Using Testosterone Propionate?

If you use testosterone propionate as TRT, which is a very fast ester, after how many days should/can u check your blood, or how many days does it take for it to stabilise and reach peak levels for the dose you are using?

If using propionate you should be injecting two or three times a week. You could check labs at three weeks, on the day of your injection, prior to it.

The propionate hurts like hell when you inject! If cypionate doesn’t work, nothing will. Some men feel edgy and hyped up on propionate.

Not usually, unless you have something too strong per ml.

Nah man, Ive tried prop for several days, it doesnt hurt me at all actually =)

I checked the steroidcalculator and it says it reaches peak levels within just like 5 days, cant u check ur levels in 5 days then?

T Proprionate reaches peak levels already after 10 - 20 hours post injection. Half life is aboud 1,5 days. If you inject twice or three times a week you will have huge variations in serum T. If you use T Prop you need to inject daily and then steady state levels are reached after around 6 half lifes (10 days).


Testosterone propionate is a slower releasing anabolic steroid with a short half-life. This characteristic allows the user to run short testosterone propionate cycles of 8-10 weeks as optimal peak blood plasma levels are achieved at 2-4 weeks.4 It is a synthetic androstane steroid derivative of testosterone in the form of 17β propionate ester of testosterone.2

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