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Hi,


I had an e-mail conversation with one of the members of this Forum and he got me very curious about some different syringes. I use normal insulin syringe 27G 1/2" and after injecting I checked if there was any testo left in the needle. So I draw back and it came back some testo, meaning the full dosage wasn´t injected. So my conclusion is, if one injects 0,2 ml one should draw a bit more in order to compensate for the loss. This means I´ve been injecting less than I thought I have. (inaccurate dosing and waste)

So according to the member there are syringes that can be bought that would minimize this problem. 

So my question: Is a normal insulin syringe considered a low or high dead space syringe?

Or is there any method that can be used to get all fluid injected without waste?


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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