Testosterone Injection Sites

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I've been shooting testosterone for seven years. In that time I've been shooting in both quads and both deltoids.

Lately I have developed an aversion to shooting in the quads. Occasionally when the needle is in the muscle, I get a weird spasm and the needle ejects out of the muscle. It freaks me out when this happens.


Can anyone tell me where there are alternative injection sites?


Also, is there any downside to just injecting in deltoids exclusively? Possibly damage to the muscle down the road from frequent injections.


Thank you
 
I have always injected in my shoulders, because I'm doing daily injections of testosterone now. I think I'm going to move to my thighs.
 
I inject anywhere I can reach, SubQ or shallow IM. Nelson has been injecting for over 20 years and doesn't report issues that would raise a concern.
 

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TRT Hormone Predictor Widget

TRT Hormone Predictor

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.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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