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  1. J

    What blood tests?

    Excellent; thanks again!
  2. J

    What blood tests?

    That is very helpful. Thanks! In my readings, I stumbled over Pregnenolone, which supposedly is a precursor to cortisol, dehydroepiandrosterone (DHEA), aldosterone, testosterone, estrogens, and progesterone. Is that something you are familiar with and that could be helpful to test for? (it is...
  3. J

    What blood tests?

    Thanks ragbag. What is TGAb and why DHEA and Progesterone?
  4. J

    What blood tests?

    Thanks Vince. My last E2 was 49.41 (not sensitive) and my last SHBG was 22.05 (I am 6'7" and 276lb.)
  5. J

    What blood tests?

    I have been on Cypionate (75mg twice a week) and Anastrazole (0.25mg twice a week) for six months. I am going to do a lab follow up to see where I am at as I have made no progress in the ED/libido department. I am thinking to test: Total T; Free T; Sensitive Estradiol; SHBG; Prolactin; DHT...
  6. J

    Advice needed for follow-up labs

    Sorry, I was asking Prolactin, not Progesterone. I read some research that shows an involvement in ED, PE and low libido...
  7. J

    Advice needed for follow-up labs

    Thanks! It was actually because of a comment you made weeks ago that I switched to two injections per week from one. Thus far no change in symptoms. I don't do estrogen injections though. I am taking the pill form (0.25) twice a week with TRT injections. I agree with you and Vince that labs...
  8. J

    Advice needed for follow-up labs

    Thanks Vince! My PSA 12 weeks ago was 0.797. Would it make sense to run it again? Do you think I should run a more thorough thyroid panel? (i.e. TSA, T4, T4 free, T3, T3 free). What about Progesterone?
  9. J

    Advice needed for follow-up labs

    I am getting ready to have some labs drawn (12 weeks since starting TRT). I am trying to find out what would be helpful. My first labs were drawn 6 weeks after starting TRT. I was on 100mg Cypionate once a week. Labs were drawn 18 hours after my last injection. My results were as follows...
  10. J

    TRT not effective after 8 weeks

    Your comment actually reminded me of the question; urologist vs. endocrinologist. Any thoughts?
  11. J

    TRT not effective after 8 weeks

    You are giving me good food for thought, thanks. It was my understanding that low SHBG was good because it prevents it from holding on to the testosterone and instead making it bioavailable (free t)?! Could you tell me how injecting twice a week or even EOD is beneficial over once a week? I...
  12. J

    TRT not effective after 8 weeks

    Yes, Free T4 was 1.38 and TSH 3rd gen was also 1.38. Interesting that both were the same value. My doc is going to call the lab and inquire if the values were in deed identical. Thanks for the link! I am too concerned that the Anastrozole dose might be too high. Perhaps easy does it and...
  13. J

    TRT not effective after 8 weeks

    My weekly dose is 100mg. No improved energy, mental clarity or mood yet. As I said, libido dropped since I started TRT. No morning wood either. It is my understanding that labs should ideally be drawn at half cycle, so 3.5 days following injection. Unfortunately I had to travel for the...
  14. J

    TRT not effective after 8 weeks

    Thank you Saul. My main goal is to increase libido, improve erections and hopefully minimize PE. I've been working out five times a week, watching my nutrition, but I and am not losing any weight. I usually have been able to lose weight if I train two hours a day and restrict food intake, but...
  15. J

    TRT not effective after 8 weeks

    I could use some insight about my apparent failure to respond to TRT thus far. I am 53, 292lb., 6'6" Started TRT injections (0.5ml Cypionate) 8 weeks ago. Total T was prior to TRT 252 and Free T (Analog) was 12.1. My libido prior to TRT was at about 15%, but has now been essentially zero...
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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