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  1. M

    Free Testosterone, Percent Low

    Hello, I received my blood test results back. I am age 60, 5'7", 158 lbs, non smoker, non drinker, active and eat healthy, but some of my blood test results are very low. Free Testosterone, Percent is 1.52 (Range 1.60-2.90 %). I could not find anything about that. Everything else is within...
  2. M

    Symptoms and Low Testosterone

    Hello, has anyone here experienced heart palpitations, fatigue, low energy, muscle pain, or depression because of hormone imbalance?
  3. M

    Which Pharmacy has Testosterone Enanthate in the USA?

    Hello, I have to switch to Enanthate because my doc thinks I am allregic to the cotton seed oil used in cypionate, but we cannot find a pharmacy who offers that. Does anyone know? Thanks
  4. M

    It is happening - ED

    OMG, I do not know what to do. The second time in row, I had erectile dysfunction. Could not hold him up for more than 1 minute and was very soft like a sponge. My brain wants it but my penis not. What is happening? :(
  5. M

    Recovery Time When You Get Older

    Is it just me or do you guys over 50 need also longer for recovery these days? 20 years ago it seems I had endless power. Today my workouts are short, but still very, very intense. I do 5 sets for legs, back, chest, and 2 sets for calves, bi- and trizeps. After that I am not able to get a weight...
  6. M

    Ovidrel not recommended by Dr. Crisler anymore?

    I was looking for the instruction I use from Dr. Crisler on Ovidrel and saw that he is not recommending it anymore. Does anyone know why...
  7. M

    My workout routine

    I see many young people working out for hours, trying to kill their muscles. My routine is: Get in and out as fast you can get. Day 1 Chest, Shoulder, Trizeps Day 2 Off Day 3 Back, Bizeps, Abs Day 4 Off Day 5 Legs, Calves Day 6 Off Day 7 Start over Sets on large muscles 5 x 10-12 (heavy and...
  8. M

    Ovidrel Buying Recommendations?

    I am using Ovidrel which was covered all the years by my insurance. My co-pay was around $20. Now, my company changed the plans and Ovidrel is not longer covered. I have to pay myself the full amount which ranges from $150-$300, depending on the pharmacy. Does anyone know a source where to get...
  9. M

    Subcutaneous Injection ?

    Hello, lately, I read more and more about this, but I could not find any good how to and what size of syringe to use. Anyone any help?
  10. M

    High Red Blood Cells and no cure

    Hello, my results on follow levels are always around RBC 6.38 Hemoglobin 18.8 Hematocrit 55.4 which is considered high. I am feeling great on TRT. There are only two options, as far as I know, to lower these levels. Stopping TRT, which draws you back to the shitty feeling when you were...
  11. M

    50 Years and Still Alive

    I am 50 years old and on TRT since 2012. I was diagnostic with 136 testosterone level and my doctor prescribed me IM testosterone. I had no clue about that at this time, so I did a lot research and came to many articles from Nelson. I contacted him and we had a good back and forth email...
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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