Testosterone Preservative

Davert - I agree, it's not a good idea if you plan to store them long term. I preload every Sunday for the week with no issues. The longest my syringe will sit is 4 days.
 
I know I am reviving an older thread here but my question ties into to this thread pretty well.

I also receive pre-loaded syringes from my Dr. I have asked for a vial, especially now since I am breaking up my dosages to smaller more frequent injections. I purchased empty vials from amazon and plan on filling them by injecting my pre-loaded syringes. I will then draw from the vials as needed, wasteful of syringes yes, but I think it is the best way to keep things sterile.

Any flaws in my plan?
 
I've never had a 10ML vial of test cyp go bad. I've used it a little past expiration sometimes and didn't notice any difference. I too load syringes for travel and have set myself up for 2 weeks at a time and didn't notice any difference either. I do this because one time I think the hotel room cleaner took my vial of Test cyp... it's labeled why not. I'm sure Empower Pharmacy is correct but I suspect the degredation of the plastic syringe is so small that it's nearly negligible. I believe what he suggests is ideal but due to circumstances not always possible. I suspect that any MD who sells pre-loaded syringes is in business to make money, as anyone can obviously load their own. Perhaps they don't want you to see how cheap the vial is.
 

hCG Mixing Calculator

HCG Mixing Protocol Calculator

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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