ft

  1. N

    Free t symptoms

    Are there specific symptoms of low free t or are they the same as tt? If so, how do the symptoms differ? Is there a possibility of having low free testosterone for years and tt being in midrange(500-600)? My main worst symptom is brain fog, but motivation, focus, intrusive thoughts...
  2. D

    Updated labs, very low E2

    I am seeing my rheumatologist in a week, (have RA) and got a few labs to bring in, also wanted to see how my TT and FT levels were looking. I have very low SHBG (10-15 usually) and so my FT is always high. My regimen has changed a bit over the years, currently my goal is to decrease my FT, it is...
  3. L

    FT using TruT vs Dialysis methods

    I recently had by TT using the LC/MS-MS method and got 837ng/dl. I used the Dialysis method to test for FT and got 8.4ng/dl. Normal range for TT is 264-916ng/dl. Normal range for FT is 5.2-28.0ng/dl. This equates to 1.5-3.2%. My FT is only at 1% using this method. When I use the TruT...
  4. H

    Blood work results after dropping dosage to 110mg from 180mg a week

    I give up trying to understand lab results when changing my dosage. After reducing my dosage from 180mg to 110mg a week (split E3.5) here are my new levels: TT 833 (274-916) FT 29.9 (8.7-25.1) Results while on 180mg a week: TT 947 (274-916) FT 33.1 (8.7-25.1) To make things worse when i...
  5. M

    high SHBG and FT

    Hi everyone, i have too high SHBG. Have you got any ideas how should i deal with it? For last month i was taking 10 000 vit D per day, but felt no changes so since week i take 20 000 vit D per day. Is there any difference if i take vit D once per day or should i take it 2-3 times per day? I...
  6. A

    HELP...TRT Results Changing Over Time - Would greatly appreciate some input

    I have been on TRT for over 4 years with generally good results. It does seem that I have to keep tweaking my protocol to maintain good levels of hormones and feel good. It also seems that I feel best in the first weeks that I am adapting to a change in protocol. All the following tests were...
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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