sh1973 said: As many of you know, I have struggled over the years ever feeling well on TRT. I've had doses all the way from 200 mg per week down to 60 mg per week. I have now been on TRT 13 ... Read more >>
noxov said: I've been listening to and reading things by John Crisler lately on pregnenolone, adrenal fatigue and thyroid issues. I've read his book on testosterone therapy and am continually ... Read more >>
FLguy123 said: After being off TRT for close to a year and trying enclomiphene and clomid a few times, I have decided to try TRT again. On either therapy I had poor energy and low libido, lost ... Read more >>
BabDaddy said: Hey Gentleman! Im 29 yrs old (5'11, 210lbs and about 15-18%bf). Ive done several steroid cycles starting at 18 up until about 3 years ago with quite a lot of variation in terms ... Read more >>
madman said: Understanding and managing the suppression of spermatogenesis caused by testosterone replacement therapy (TRT) and anabolic-androgenic steroids (AAS) (2022) Ankit Desai , Musaab ... Read more >>
DarkMan X said: Hi, My name is Gabe. I've been on TRT since August 2021. I've switched to Defy Med in March of 2022. I am also Type 2 diabetic who uses Novolog Subcutaneous insulin. Since Defy ... Read more >>
JRos895 said: There is generally no fear of women permanently losing their fertility when they start birth control, even though birth control (generally a mix of estradiol and progesterone) ... Read more >>
madman said: Temporal Changes of Clomiphene on Testosterone Levels and Semen Parameters in Subfertile Men (2022) Tommy Jiang, John T. Sigalos, Vadim Osadchiy, Alvaro Santamaria, Michael H. ... Read more >>
madman said: [image] Our heads have officially exploded, people. Dr. Rachel Rubin is a board-certified urologist and sexual medicine specialist who dropped so much knowledge and helpful information ... Read more >>
Vince said: Scientists may never find the elixir of life, but they are finding new ways to extend our life spans. One day, protecting our cells from aging may be as easy as taking a pill. ... Read more >>
john.davidson25 said: Greetings Gents: Anyone here who moved away from Testopel to Androgel? Or if you are taking Androgel, what is your general impression? I used androgel before and found that I never ... Read more >>
madman said: In this clip from our 2022 mid-year update conference, Mark Moyad, MD, MPH asks Matthew Cooperberg, MD, MPH, about the use of Avodart (dutasteride) and Proscar (finasteride) in ... Read more >>
ResearchIt said: When measuring free testosterone, my understanding is the equilibrium ultrafiltration method is the most accurate and the calculators are much less useful. As you can see below, ... Read more >>
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.
