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    Exogenous r-FSH & HPTA

    Would adding exogenous r-FSH shut down the HPTA? I have searched for this question in the forums and online. Have not found much, but I do not think that it would. My understanding is that hcg does. My LH is in a good spot and I was thinking of perhaps adding some FSH alone.
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    Mechanism Behind Libido - Looking For Post

    I had seen a post a while back wherein someone was explaining the exact mechanism by which libido in men is regulated (ie exactly what is happening in the body when you are feeling froggy). I thought I had put it on my 'watch' list, but I cannot seem to find it. Not saying it was totally...
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    DiscountedLabs - Semen Analysis

    I know I have ordered one before on discounted labs, but it has been a while and now they are working with quest. Cannot find on website, is discounted labs no longer offering semen analysis? Thanks, Dom
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    Fertility Recovery - Wife Unimpressed With Sterility

    Been on TRT for about 2.5 years. 34 year old male. I have 2 kids and want to keep the party going with a 3rd, possibly even 4th. Hopefully some information that comes out of this can help someone else. Of course, I am hoping it will help me too. I've spent about 4 weeks reading info here and I...
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    New Guy From Southern CA

    Hey Everyone, 34 year old hispanic male here. Been on TRT for a little over two years. I experienced very positive effects for most of that time. Like so many others, I wish I would have educated myself much, much more before I started. At this point, I am looking to recover fertility and get...
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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