Thanks to Dr Sun for this diagram.
Timeline details (left → right)
YearProduct (image above/below the line)Form & delivery
1935-1937No product image—text block below the line: “Testosterone first synthesized” with a bullet list of early preparations (oral 17α-methyltestosterone, injectable...
Prior to HCG monotherapy baseline:
Total T ~350ng/dL
SHBG ~17 nmol/L
Estrodial ~25 pg/ml
Free T ~13pg/mL.
I was prescribed HCG 3x per week at 300 units each day. Results:
Total T 326ng/dl
SHBG 11 nmol/L
Estrodial ~25 pg/ml
Free T ~20pg/mL
I should note that LH/FSH were 7/2 respectively before...
FDA approval of Tlando follows in the footsteps of Jatenzo
The recommended dosage is 225 mg orally twice daily with food. It does not require dose titration.
"We believe Tlando's oral formulation and convenient dosing, which requires no titration, differentiates it from other treatment...
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.
