Tucker Max released his ebook for the Mating Grounds website, very good read for beginners!
One thing in the book that I saw was the levels he recommended for free T.
What to Shoot For: 100+ ng/dL
Danger Zone: Under 60 ng/dL
I'm seeing a ridiculous spread of what is recommended across endocrinology books, labs, and online. Free T is only 1-3% of total T, some people get this confused with Bioavailable T which includes testosterone weakly bound to albumin + free T.
From Labrix saliva results that I just got tested:
30.1-142.5 pg/ml reference range for male
if my math is right? 100 pg/ml should be 10 ng/dl? (which means that the recommendation is 5x higher than the high range)
Lef.orgÂ has the free T listed as,
Free Testosterone: 20-25 pg/mL
which seems awful low to me...
I checked 3 or 4 other sites with completely crazy numbers that didn't correlate, so what is the actual levels of free T that are normal?!