HCG info
By Eric M. Potratz
In this article I will address the misunderstanding and misuse of Human Chorionic Gonadotropin (hCG) and show you the most efficient way to use hCG for the fastest and most complete recovery.
A prolonged LH deficiency causes the testes to desensitize, requiring a higher hCG dose for ample stimulation. In men with normal LH levels and normal testicular sensitivity, the maximum increase of testosterone is seen from a dose of only 250iu, with minimal increases obtained from 500iu or even 5000iu.(2,11,12-18) If you have allowed your testes to desensitize over the length of a typical steroid cycle, (8-16 weeks) then you would require a higher dose to elicit a response in an attempt to restore normal testicular size and function but there is cost to this, and a high probability that you won't regain full testicular function.
One term that is critical to understand is testosterone secretion capacity which is synonymous to testicular sensitivity. This is the amount of testosterone your testes can produce from any given LH or hCG stimulation. Therefore, if you have reduced testosterone secretion capacity (reduced testicular sensitivity), it will take more LH or hCG stimulation to produce the same result as if you had normal testosterone secretion capacity.
Note: visually analyzing testes size is a poor method of judging your actual testicular function, since testicular size is not directly related to the ability to secrete testosterone. (4) This is because the leydig cells, which are the primary sites of testosterone secretion, only make up about 10% of the total testicular volume.
The decreased testosterone secretion capacity caused by steroid use was well demonstrated in a study on power athletes who used steroids for 16 weeks, and were then administered 4500iu hCG post cycle. It was found that the steroid users were about 20 times less responsive to hCG, when compared to normal men who did not use steroids. (8) In other words, their testosterone secretion capacity was dramatically reduced because they did not receive an LH signal for 16 weeks. The testes essentially became desensitized and crippled. Case studies with steroid using patients show that aggressive long-term treatment with hCG at dosages as high as 10,000iu E3D for 12 weeks were unable to return full testicular size. (7) Another study with men using low dose steroids for 6 weeks showed unsuccessful return of Insulin-like factor-3 (INSL3) concentration in the testes upon 5000iu/wk of HCG treatment for 12 weeks (6) (INSL3 is an important biomarker for testosterone production potential and sperm production. 20)
These studies show that postponing hCG usage until the end of a steroid cycle increases your need for a higher dose of hCG, and decreases your odds of a full recovery. As a consequence to using a higher dose of hCG at the end of a cycle, estrogen will be increased disproportionately to testosterone, which then causes further HPTA suppression (from high estrogen) while increasing the risk of gyno.
Based on studies with normal men using steroids, 100iu HCG administered everyday was enough to preserve full testicular function and ITT levels, without causing desensitization typically associated with higher doses of hCG. (2) It is important that low-dose hCG is started before testicular sensitivity is reduced, which appears to rapidly manifest within the first 2-3 weeks of steroid use. Also, it's important to discontinue the hCG before you start post cycle therapy (pct) so your leydig cells are given a chance to re-sensitize to your bodys own LH production. (To help further enhance testicular sensitivity, the dietary supplement Toco-8 may be used)
A more convenient alternative to the above recommendation would be a twice a week shot of 200iu hCG, or once a week shot of 500iu. However, it is most desirable to adhere to a lower more frequent dose of hCG to mimic the body's natural LH release and minimize estrogen conversion. If you are starting hCG late in the cycle, one could calculate a rough estimate for their required hCG kick starting dosage by multiplying 40iu x days of LH absence, since the testes will be desensitized, thus requiring a higher dose. (ie. 40iu x 60 days = 2400iu HCG dose)
Note: If following the on cycle hCG protocol, hCG should NOT be used for post cycle therapy (pct).
Recap
For preservation of testicular sensitivity, use 100iu hCG ED starting 7 days after your first AAS dose. At the end of the cycle, drop the hCG two weeks before the AAS clear the system. For example, you would drop hCG about the same time as your last Testosterone enanthate shot. Or, if you are ending the cycle with orals, you would drop the hCG about 10 days before your last oral dose. This will allow for a sudden and even clearance in hormone levels, while initiating LH and FSH production from the pituitary, to begin stimulating your testes to produce testosterone. Remember, recovery doesn't begin until you are off hCG since your body will not release its own LH until the hCG has cleared the system.
In conclusion, we have learned that utilizing hCG during a steroid cycle will significantly prevent testicular degeneration. This helps create a seamless transition from on cycle to off cycle thus avoiding the post cycle crash.