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    TRT, Therapeutic Phlebotomy, Low Ferritin, and Iron Replacement

    I have been taking Losartan for high BP for many years now, prior to starting TRT, but I appreciate the info. I wonder how high my hematocrit would be if I wasn't taking it. Do you agree that an iron supplement is needed, in order to normalize my low ferritin? I have a diet that is low fat, but...
  2. D

    TRT, Therapeutic Phlebotomy, Low Ferritin, and Iron Replacement

    My T was over 1500 three months after I started injecting. I thought about sex constantly, had spontaneous erections at age 56, and had severe mood swings. Lowering the dosage helped solve those issues. Do you have hematocrit tested, to determine when you should donate again? How high do you...
  3. D

    TRT, Therapeutic Phlebotomy, Low Ferritin, and Iron Replacement

    What are "E2 levels" ? Do you think I should see an Endocrinologist, rather than a different GP? If I'm injecting 0.7ml every ten days, does it make sense to inject one-half of that every five days? I thought the idea of stopping the TRT was loopy, thanks for the guidance.
  4. 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...
  5. D

    Urology Consult Needed?

    Follow-Up Comments Had the DRE done today. Doctor thought the prostate felt enlarged, but did not detect anything that felt abnormal/cancerous. She thought a PSA re-test was unnecessary at this point in time. She agreed to a 6 month PSA test, as my PSA velocity implies I could be over 4.00 in...
  6. D

    Urology Consult Needed?

    Two of the past three years my PSA number has doubled. I don't see that as a "somewhat" rise. If it doubles again next year, I'm at 4.64 and that is outside the normal range. I read that over 20% of all men have prostate cancer with a PSA number >2.40. At my insistence, my GP will perform a DRE...
  7. D

    Urology Consult Needed?

    In June of 2012 I started TRT. My T level, prior to TRT was in the 125ng/DL-250ng/DL range. Prior to TRT I suffered from ED, low libido, loss of pubic hair, low energy, and had trouble focusing at work. All of these symptoms disappeared after starting TRT. After several months of yo-yo T...
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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