The study used 50 mg vs 100 mg testosterone enanthate per week subcutaneously with a 27 gauge 5/8" needle. They also compared both to Pk of one IM shot of 200 mg.
Sex Med. 2015 Sep 17;3(4):269-79. doi: 10.1002/sm2.80. eCollection 2015 Dec.
Pharmacokinetic Profile of Subcutaneous Testosterone...
EWING, N.J., Jul 22, 2014 (BUSINESS WIRE) -- Antares Pharma, Inc. today announced that the first patient has been dosed in a double-blind, multiple-dose, phase 3 study to evaluate the efficacy and safety of QuickShot® Testosterone (QS T) administered subcutaneously once each week to...
Here's the only study I found that supports the use of subcutaneous injections of Testosterone.
Subcutaneous administration of testosterone. A pilot study report. - PubMed - NCBI
Subcutaneous administration of testosterone. A pilot study report.
To investigate the...