Do I need to lower my dose when switching to an insulin syringe?

Arcane

Active Member
I recently started using insulin syringes, rather than the typical hypodermic needle. I inject 30mg every other day, and felt this would be much more convenient in terms of sustainability and preventing needle fatigue. However, when using a hypodermic needle with a replaceable tip, there is about 2.5-5 IUs that are lost and left in the syringe due to hub loss. This equates to about a loss of 10-15 mg of testosterone lost each week. Should I lower the dose when using insulin Syringes buy this amount? In order to match the amount I was getting previously? So 25 mg every other day with an insulin syringe, as opposed to the 30 mg I was injecting every other day with the hypodermic needle
 
No, just draw and inject your target dosage. The "waste" in the hub of an insulin syringe is negligible. The only thing I do differently from when I was using harpoons is that I warm the vial before drawing to make the oil carrier flow more easily.
 

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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.

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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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