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  1. W

    Injections Every 3.5 days, when to blood test?

    To answer the previous questions, no real stress (I mean, I'm a dad of a 2 year old, but nothing I can't manage), caffeine is fairly normal a cup or two of coffee a day, I work out anywhere between 8am to 5pm and I don't pee too much at night. It's pretty rare that I have to wake up and go. I...
  2. W

    Injections Every 3.5 days, when to blood test?

    Thanks for responding, Nelson. Here are my recent labs. Testosterone, Serum 974 Free Testosterone (Direct) 19.3 Estradiol 33.8 PSA 1.3 That's all that was tested. The E2 test was not sensitive, so I will have to go back and probably retest that. Another note is that I postponed my injection...
  3. W

    Injections Every 3.5 days, when to blood test?

    My current protocol: 70mg Test Cypionate 500 UI HCG No AI Both injected on the same day every 3.5 days I'm feeling some issues possibly relating to the fact that I had to switch my protocol around the holidays to 150mg test/1000IU once weekly. I was traveling and it was simply easier to leave...
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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