Welcome to Testosterone HQ—Men's Health's guide to the exciting, complicated, and revolutionary world of testosterone. For everything you need to know about T, click here. IF YOU'RE LOW on energy, low ...

This article was reviewed by Felix Gussone, MD. If you’ve been feeling a bit more couch potato than go-getter lately, dragging through the day, snapping at people for no reason, or wondering where ...

At-home testosterone test kits use a finger-prick blood sample, with results generally available within a week. Some companies also offer saliva-based tests, which are pain-free and easy to collect, ...