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.
Abstract
OBJECTIVE:
To investigate the...
Predict estradiol, DHT, and free testosterone levels based on total testosterone
⚠️ Medical Disclaimer
This tool provides predictions based on statistical models and should NOT replace professional medical advice.
Always consult with your healthcare provider before making any changes to your TRT protocol.
ℹ️ Input Parameters
Normal range: 300-1000 ng/dL
Predicted Hormone Levels
Enter your total testosterone value to see predictions
Results will appear here after calculation
Understanding Your Hormones
Estradiol (E2)
A form of estrogen produced from testosterone. Important for bone health, mood, and libido.
Too high can cause side effects; too low can affect well-being.
DHT
Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth,
prostate health, and masculinization effects.
Free Testosterone
The biologically active form of testosterone not bound to proteins.
Directly available for cellular uptake and biological effects.
Scientific Reference
Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.
