air bubble

  1. S

    Acceptable Air Bubble?

    No matter how I try, I am always left with a tiny air bubble. I ever so slightly overfill beyond my intended dose to make up for it. Should I be aiming to have zero air bubble in the syringe? I've included a pic of the air bubble in my 10mg daily shot.
  2. F

    insulin syringe bubble with test cyp

    I started trying 27g and 28g easytouch insulin syringes 1/2" for test cyp. I almost always end up with one sizeable air bubble at the top of my syringe after I'm done loading (and lots of tiny bubbles while loading). Even though the bubble is at the needle side of the syringe, it won't come...
  3. L

    Air Bubble/Aspiration/Injection Worries

    Hi Everyone! I've been back on trt for 2 months now after a year stint of using clomid, and everything is going great. The only issue I've been having is with injection anxiety and worrying I'm going to accidentally inject into a vein. I'm injecting E3.5 days rotating between outer thighs and...
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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