Thanks for sharing our work!
Do you mean evidence for increased thrombotic risk in regular blood donors? They don't allow blood donations frequently enough to allow for persistently decreased hematocrit / decreased iron stores. Hematocrit/Hb bounces back to normal within 1 to a couple of weeks...
I'm aware of the distinction made by some authors, especially in the field of hematology. Each to their own, personally I don't see the use of making the distinction in this context. Importantly, increased red cell mass measurements are rarely, if ever, performed in studies administering AAS -...
Hi there, I'm the lead author of the paper. Both terms may be used interchangeably as described by standard works, such as Harrison's Principles of Internal Medicine. Some authors choose to make a distinction between them – in the field of hematology in particular – but we choose not to as it's...
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.