Syringe change questions

AdamF

New Member
Hi all,

Been on trt about 5 years. Bloodwork been stable for quite a while now. Happy with how everything is going. Recently I changed from luer lock syringes to 27g insulin syringes for my testosterone shots. Been thinking about it, when i used to use the old syringes there would be a tiny bit of test left in the syringe after injection, but with the insulin syringes that isnt the case. So with that in mind, im likely taking in slightly more test than i was before. My question, is the amount left in the luer lock syringe so negligible that it wont make a difference in my bloodwork, or should i be lowering my dose slightly? Thanks for any insight.
 
My question, is the amount left in the luer lock syringe so negligible that it wont make a difference in my bloodwork, or should i be lowering my dose slightly?
.1mL is typically unused which after 10 shots is 100 mL wasted medicine. I wouldn't change anything, it's unlikely to change treatment drastically to where you would notice.

If it isn't broke...
 

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⚠️ 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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