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  1. J

    Low Energy / Low Libido / Poor Sleep / High Cortisol / Low (Free) T (?)

    How much higher is your rt3? What will your T3 protocol look like?
  2. J

    Low Energy / Low Libido / Poor Sleep / High Cortisol / Low (Free) T (?)

    UPDATE 2 My Free T3 and Reverse T3 results are here: Free T3: 3.9 pmol/L (2.63 - 5.70) Reverse T3: 199.0 pg/ml (90 - 215) Reverse T3 is pretty high, but still within range. I’m not sure if I calculated fT3/rT3 ratio correctly (different units), but I think it’s in the lower side of normal...
  3. J

    Low Energy / Low Libido / Poor Sleep / High Cortisol / Low (Free) T (?)

    UPDATE Hi guys, I did a lab test for Antibodies, Ferritin and Iron. Reverse T3 will be tested next week. Iron: 13.8 µmol/L (10.6 - 28.3) Ferritin: 109 µg/L (20 - 250) Anti TG (H): 6.06 kU/L (<4.11) Anti TPO: 1.08 kU/L (<5.61) Any opinion on high Anti TG? Is it high enough to speculate my...
  4. J

    Free testosterone results interpretation

    More details here: https://www.excelmale.com/forum/showthread.php?15414-Low-Energy-Low-Libido-Poor-Sleep-High-Cortisol-Low-%28Free%29-T-%28-%29
  5. J

    Low Energy / Low Libido / Poor Sleep / High Cortisol / Low (Free) T (?)

    Vince Carter, Gman86, ratbag, lexer, thank you all for your kind advice! I will now definitely wait for all my results before I make a decision to start TRT. TSH (labeled as S-TSH) was measured in the 1st and 2nd blood tests. 3.00 miU/L (0.27 - 4.20) 2.75 mE/L (0,59 - 4,23) S-pT4 and S-pT3...
  6. J

    Low Energy / Low Libido / Poor Sleep / High Cortisol / Low (Free) T (?)

    Hi guys, I would really appreciate your help. I am 29 years old. I have problems with low energy, low libido, weak erections (and no morning/spontaneous erections at all) and poor sleep (trouble falling asleep, waking up in the middle of the night). It’s been really bad in the last year, but I...
  7. J

    Free testosterone results interpretation

    Thank you, I will as soon as I'm home again. For now I'm just trying to figure out the logic behind my Free T number, since it seems that almost no one is posting them with these values (pmol/L). I'm trying to figure out if 48,5 is really low or low-normal number for Free T.
  8. J

    Free testosterone results interpretation

    Hi guys, I have all the main low testosterone symtoms. I am 29 years old. My lab results for T are: Total T: 13,90 nmol/L Free T: 48,5 pmol/L (my lab's range for adult men: 30,15 - 189,8 pmol/L) As I understand, total T is below average, but not extremely low. What about the free T? How do...
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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