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  1. T

    Insulin needle with just cypionate

    Backfill? I've only done 3 T injections so far, and 4 HCG using insulin needles. I've never heard of backfilling. Is that something people using insulin needles commonly do because going through the rubber of the HCG bottle will dull my needle? I only got enough needles and syringes from the...
  2. T

    Need advice on switching doctors!

    These guys already told you how you can switch doctors. I'm just chiming in because I'm almost in the same boat and have definitely made the decision to switch myself...addressing your "any advice?" question. Your only advantage is he's a good doctor and seems to know what he's talking about...
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    Cialis and Vision

    I can't swear to this 100%, but it seemed to me the two times I took Cialis (not the one for daily use, I haven't tried that one and don't know if there's a difference) my vision got a little blurry as well. I definitely had lower back pain, and a headache for sure the second time. But nothing...
  4. T

    New Here, TRT Not Going Well for Me

    Thank you Chris. I need to educate myself a little more on what all this stuff is so I can be better informed. I kind of just took it for granted I was getting more T so that would fix things. My plan of action is read more here, contact my doctor to see what she suggests if my levels still...
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    New Here, TRT Not Going Well for Me

    Awesome. This was a lot of good info. Thanks Gene.
  6. T

    New Here, TRT Not Going Well for Me

    I'm not surprised all that wasn't ordered from the first place, because they were doing a general blood test to check a bunch of things in general. But yeah, if all that stuff is important, I have no idea what it is from the doctor I'm seeing...or if those were tests she ordered to be done. I...
  7. T

    New Here, TRT Not Going Well for Me

    Thanks Gene. It's good to hear there is still hope. It sounds like a daunting process and a lot to go through, but I don't want to spend the rest of my life in this condition when I know there is a better state of being. So I imagine I will do what I have to do. I will attach the complete...
  8. T

    New Here, TRT Not Going Well for Me

    I’m glad to find a forum with some really knowledgeable people, and I have a couple questions, but let me give you my scenario and introduction first. I’m an otherwise healthy male, 39-years-old, who discovered this year I have low testosterone. I discovered this when I had to change health...
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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