Recent content by billsman

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    Is Rusfertide FDA Approved to Manage Erythrocytosis in Polycythemia Vera?

    I'm beginning to wonder whether a hepcidin-mimetic would be of any help. As I understand it, increased hepcidin results in lower ferroportin levels, which decrease iron absorption from the gut. This, then, reduces the production of red blood cells. But if iron absorption is reduced, how would...
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    Warning for Men on TRT: Low Ferritin is Bad

    Thanks for responding. It's been a long-standing issue and hydration doesn't move the reading much. High crit started when I moved to injectable test. My low ferratin and low iron have resulted in bad fatigue.
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    Warning for Men on TRT: Low Ferritin is Bad

    My reading is that the testosterone pills like Jatenzo are least likely to elevate crit. My assumption is that this is due to its bid dosing, resulting in less of a spike. So why are so few guys taking Jatenzo? I tried it when it first came out, but was disappointed -- but perhaps I didn't...
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    Warning for Men on TRT: Low Ferritin is Bad

    Can you clarify what you mean by H&H?
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    HCG Reconstitution Calculator- HCG Dosage Calculator

    Man, I was prescribed 10,000 IU x 5 ml water -- 1.3 cc dose 3x per week for 10 years. Yeah, I had gyno after that mess.
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    Is Rusfertide FDA Approved to Manage Erythrocytosis in Polycythemia Vera?

    I'm afraid you're correct about rusfertide. However, my hope is that there will be competitors in the future. I tried Jatenzo in the past and it didn't produce good levels for me. I'm not looking for supra-levels -- just 500s. I've been on TRT for over 25 years, but I've only had high...
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    Is Rusfertide FDA Approved to Manage Erythrocytosis in Polycythemia Vera?

    So I am at a point where my iron and ferritin are chronically low. I take xyotsed 100 mg per week. I do TP every 2 months. Something has to give. My question: other than gels, are there other TRT that do not produce erythrocytosis?
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    Is Rusfertide FDA Approved to Manage Erythrocytosis in Polycythemia Vera?

    Some may be interested to know that the FDA approved rusfertide as a breakthrough treatment for PV. Not sure that's going to help folks like me with chronically low ferritin. From what I can find out thus far, the out-of-pocket cost would be $120k per year. But at least there is a...
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    Warning for Men on TRT: Low Ferritin is Bad

    Your first point: Are you saying that E2 elevations via hCG are produced in the testes? And your second: Can you clarify -- my understanding is that the high hematocrit on TRT is due to most iron being utilized for red blood cell production in lieu of being bound via ferritin. Thx for...
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    Warning for Men on TRT: Low Ferritin is Bad

    Do we understand why hCG does not lower ferritin via hepcidin?
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    Warning for Men on TRT: Low Ferritin is Bad

    Anyone know if rusfertide is coming out soon? I know it is in phase III. That would be a game changer.
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    Warning for Men on TRT: Low Ferritin is Bad

    I appreciate the response. I was on hCG for 10 years to have kids. At the end, I had irritability and high estradiol. I know the latter can be controlled with an AI. I am considering returning to hCG as my ferritin levels have been very low for many years. I have been on TRT for 28 years...
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    Warning for Men on TRT: Low Ferritin is Bad

    Sorry, maybe I missed it, but could you point me to your resource on TRT and erythroferrone flooding? I've had ferritin levels below 12 for three years and need to understand the process better.
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    Chronically low ferratin levels

    I have been on TRT for 28 years. As with most people who are long-term folks, I've had issues with high red blood cell production for years. I use therapeutic phlebotomies every two months to keep my crit in line. But my ferritin has been low for many years. I'm around 15 and just tired all...
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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