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 ...

The Atellica TSTII Testosterone assay is the only immunoassay with CDC HoST-TT Certification; Certification reaffirms assay re ...

Angela Myers is a freelance writer covering mental health, wellness and nutrition. She’s also conducted award-winning research on how to better communicate about sexual violence prevention and mental ...

Sun, January 11, 2026 at 1:56 PM UTC If you’ve ever had your testosterone levels checked, you may have come across two different numbers: one for free testosterone and the other for total testosterone ...

Testosterone levels peak during male puberty and decline with age in both males and females. With low testosterone in males, ...

Testosterone is the quintessential male hormone (androgen), and it’s a busy one, helping to regulate intimate function, muscle mass, red blood cell count, mood, and more. But not all testosterone in ...

Testosterone is a sex hormone that regulates a number of processes in the human body, including fertility, sex drive, bone mass, fat distribution, muscle mass, and red blood cell production.

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, ...