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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
How long after the T injection are T levels the highest?
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<blockquote data-quote="Cataceous" data-source="post: 152683" data-attributes="member: 38109"><p>To get an idea of what's happening with a constant injection cycle, consider injecting a testosterone ester with a half-life of four days that instantly contributes 400 ng/dL to total serum testosterone. Four days later it's contributing 200 ng/dL. Another four days later it's contributing 100, and so on. In this simplified example, the trough testosterone consists of contributions from all the previous injections, going back forever: 200+100+50+25+... This is 400 ng/dl. After the injection you get the peak, which is 800 ng/dL.</p><p></p><p>In reality there's a delay to the peak serum testosterone after each injection. The length of this delay depends on various factors, with the ester and the length of the injection cycle being among the most important. With daily injections the (small) peaks are probably occurring around 12 hours post-injection. With a longer ester, such as cypionate, and a four-day injection cycle, peaks most likely occur in the range of 24 to 48 hours post-injection.</p></blockquote><p></p>
[QUOTE="Cataceous, post: 152683, member: 38109"] To get an idea of what's happening with a constant injection cycle, consider injecting a testosterone ester with a half-life of four days that instantly contributes 400 ng/dL to total serum testosterone. Four days later it's contributing 200 ng/dL. Another four days later it's contributing 100, and so on. In this simplified example, the trough testosterone consists of contributions from all the previous injections, going back forever: 200+100+50+25+... This is 400 ng/dl. After the injection you get the peak, which is 800 ng/dL. In reality there's a delay to the peak serum testosterone after each injection. The length of this delay depends on various factors, with the ester and the length of the injection cycle being among the most important. With daily injections the (small) peaks are probably occurring around 12 hours post-injection. With a longer ester, such as cypionate, and a four-day injection cycle, peaks most likely occur in the range of 24 to 48 hours post-injection. [/QUOTE]
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Testosterone Replacement, Low T, HCG, & Beyond
Testosterone Basics & Questions
How long after the T injection are T levels the highest?
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