I have a friend who's been struggling with low T now for a while. 8 months ago and recently he tested just above 300 total T and experiencing textbook symptoms. His doctor told him she "can't prescribe" because he's technically within the (Labcorp) reference range. The question I'm posing here...
Can anyone help me understand how free testosterone is measured and how the results are interpreted? In Dec of 2017 my free-t was tested by Quest. Results were 189 pg/mL with a range of (35 - 155). Recently went with Discounted Labs (Labcorp) and got back what they call "Direct" and the results...
Was hoping to just get another set of eyes on my numbers. If I've learned anything from this site it's not to fixate on just the numbers but also consider how one is feeling. Here lately I think I'm going the wrong direction. Not feeling so great, stamina is falling off, gains in the gym are...
First post here and thanks for the opportunity. This site is great.
Could someone help identify which test I received. I requested the Estradiol Ultrasensitive LC/MS/MS, Quest 30289 but I'm not sure that's what I received.
Here's the results:
ESTRADIOL LVL 31.6...
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.
