Prefilling Syringes?

Are there any reasons why one shouldn't prefill their syringes upon receiving their vial of testosterone?
Injecting on a daily basis, I regularly load my syringes every weekend for the coming week, particularly when I travel. Nelson has written that he's pre-loaded syringes for years.
 
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I know many men prefill their syringes, in all honesty I don't feel for me that it's necessary. I'm doing daily now and I find it's easier then my no protocol, every morning when I wake up the first that I do is inject my testosterone. Because of the small amount it's easy and fast.
 
I have been doing it for close to a year. Honestly keeping things sterile doing injections at home just requires common sense imo. I've read all kinds of crazy things, and it seems problems are very rare.
 
Thanks guys, it seems to me that there aren't really any downsides either way and it comes down to personal preference. I think I was worried about the stopper wearing down but that doesn't appear to be an issue.
 
I preload 2 weeks worth of testosterone, which is 4 syringes. When I receive my HCG, I preload all the syringes and put them in the freezer. Then I just unthaw them as needed. I haven't noticed any loss of potency. Been doing this for a couple of years now and its very convenient for me.
 

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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.

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Normal range: 300-1000 ng/dL

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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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