**broken link removed**
This study demonstrates for HRT purpose, there are several other studies shown to have the same effect.
I don't necessarily inject subcutaneous, rather "shallow IM" with a 27ga ½".
I can tell you personally that this method is just as effective as Deep IM, per blood work.
With higher TT, FT, lower SHBG and more stable Hematocrit/Hemoglobin
Switching to "shallow IM" a few things I appreciate with this route, on a hormonal status and Hematocrit/Hemoglobin ranges, going once a week on just a TRT dose of 170 mg, my HH was always out of range 18+, I have therapeutic phlebotomies once a month, constantly out of range, switching to EOD, for the last 4 months my hemoglobin has been around 16.6-16.8… if its above 16.4 I dump… to me this in it's self is worthy!
1). Less delivery of Ester keeps HH from spiking in unhealthy ranges, So for those who have other health issues that their HH climb ie; sleep apnea, dehydration,Malabsorbtion issues, Polycythemia Vera… This method is a much healthier, a slower release of said AAS.
2). It's also known that more frequent low dose injections can lower SHBG if its related to bound Estrodiol, making Bio Available Testosterone more ready, So your fixing two possible issues if one has High SHBG and low Bio Testosterone.
3). Keeps Estrodiol in desirable range, with minimal use of an AI, If even needed.
It's like religion ~ everyone has their own belief.