kfairhurst
New member
PCT - Are we starting it too early?
I've been thinking about this for a while, so I figured why not get a thread going about it.
The most commonly used time-frame to start pct after a test cyp/ene cycle is 14-16 days. However, this does not appear to make much sense. If you use a calculator such as this one: PCT Calculator | Post Cycle Therapy Calculator, and calculate a 600mg/week dosage of test cyp for 12 weeks, you'll see that at 14-16 days after last pin, the testosterone levels in your body are at ~300-250mg range (of test cyp) . This is well above the body's own natural production. In this study: Testosterone dose-response relationships in healthy young men 300mg of ene/week caused a total testosterone level of 691 ng/dL above baseline. This is a substantial amount above baseline (241-827 ng/dl is normal according to Labcorp). Of course, if administering 300mg test every week your total T levels would be higher than ~300mg of test that is on the decline (as is the case after stopping injections). But with 300mg of test in your system, you are still well above normal levels.
Looking at William Llewellyn's book Anabolics 2009, he talks about a study where males were administered 250mg of test ene per week. After 21 weeks, the subjects stopped taking testosterone.
In this graph here:
View attachment 547236
You can see that it was 5 weeks before the testosterone bottomed out (meaning the test ene is no longer contributing to total testosterone levels). If you use the calculator, this would theoretically put someone at about 30mg of test ene in their system. This is a low level of testosterone, and makes logical sense that it would slowly start climbing around this point.
If starting pct at the 14-16 day mark, you would still have supraphysiological levels of test in your system. It would take another ~10 days for the level of androgens in you to get to the ~100mg mark. So, why would one want to start PCT this early? The human body is not going to produce testosterone when above levels of androgens are well above normal.
I've been thinking about this for a while, so I figured why not get a thread going about it.
The most commonly used time-frame to start pct after a test cyp/ene cycle is 14-16 days. However, this does not appear to make much sense. If you use a calculator such as this one: PCT Calculator | Post Cycle Therapy Calculator, and calculate a 600mg/week dosage of test cyp for 12 weeks, you'll see that at 14-16 days after last pin, the testosterone levels in your body are at ~300-250mg range (of test cyp) . This is well above the body's own natural production. In this study: Testosterone dose-response relationships in healthy young men 300mg of ene/week caused a total testosterone level of 691 ng/dL above baseline. This is a substantial amount above baseline (241-827 ng/dl is normal according to Labcorp). Of course, if administering 300mg test every week your total T levels would be higher than ~300mg of test that is on the decline (as is the case after stopping injections). But with 300mg of test in your system, you are still well above normal levels.
Looking at William Llewellyn's book Anabolics 2009, he talks about a study where males were administered 250mg of test ene per week. After 21 weeks, the subjects stopped taking testosterone.
In this graph here:
View attachment 547236
You can see that it was 5 weeks before the testosterone bottomed out (meaning the test ene is no longer contributing to total testosterone levels). If you use the calculator, this would theoretically put someone at about 30mg of test ene in their system. This is a low level of testosterone, and makes logical sense that it would slowly start climbing around this point.
If starting pct at the 14-16 day mark, you would still have supraphysiological levels of test in your system. It would take another ~10 days for the level of androgens in you to get to the ~100mg mark. So, why would one want to start PCT this early? The human body is not going to produce testosterone when above levels of androgens are well above normal.
