therapeutic phlebotomy

  1. Nelson Vergel

    How U.S. Blood Banks Handle Therapeutic Phlebotomy for Men on Testosterone Replacement Therapy (TRT)

    How U.S. Blood Banks Handle Therapeutic Phlebotomy for Men on Testosterone Replacement Therapy (TRT) Blood centers have had to adapt their policies because the polycythemia/erythrocytosis that often accompanies TRT creates both medical need (frequent blood removal) and regulatory challenges (how...
  2. Nelson Vergel

    Therapeutic Phlebotomies for Men on TRT in Houston: A Model for Other Cities

    Our regional blood center has a policy that accepts blood from men on TRT with high hematocrit for donations but they still need an order from their doctor. That order is good for as many therapeutic phlebotomies as needed in two years. The FDA gave them a variance that I assume applies to the...
  3. B

    High HCT - trying to decide whether to get phlebotomy

    I have been on TRT for over ten years and my lab values always hover around 56 Hct and 19 Hgb. I never paid much attention to it but now that I am mid 40s I am starting to worry more about those things. As far as I can tell, I have never had any ill effects from those levels. There seems to be a...
  4. C

    when to donate blood

    my hematocrit is slightly high at 50.5%. my red blood cell count is high at 6.59 million/uL but my ferritin is low at 11ng/ml and my iron is low at 45 mcg/dL. I'm really concerned about my high RBC and wondering if i should donate with my iron and ferretin so low.
  5. I

    Suggestions for facilities that offer affordable therapeutic phlebotomies?

    I have a hematocrit of ~54.5 and I found out that I'm ineligible to donate blood because I (i) lived in the UK for a few years between 1980 and 1996 and (ii) had malaria at one point in my life. ]: My Low T Center charges $50 per phlebotomy and I'm wondering if there were facilities that were...
  6. Nelson Vergel

    Donating Blood Prevents Heart Disease

    20 Scientific References That Determined that Donating Blood is Good for Your Cardiovascular Health. Men on Testosterone Replacement Therapy with High Hematocrit and High Ferritin Will Benefit Even More. 1) Donation of blood is associated with reduced risk of myocardial infarction. The Kuopio...
  7. D

    TRT, Therapeutic Phlebotomy, Low Ferritin, and Iron Replacement

    I'm 59 years old and have been on TRT since 6/12. In the fall of 2012 excessively high testosterone levels forced us to lower the injection amount from 1.0ml to 0.7ml and decrease the injection interval from 14 days to 10 days. That lowered mid-cycle testosterone to 650-675 ng/dL, where it has...
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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