Serum testosterone levels in male hypogonadism: Why and when to check-A review

Aim Although “late onset hypogonadism”, a condition that includes low testosterone and symptoms, is common in men over the age of 40 years, diagnosis is not clear cut amongst non-specialists. It is the aim of this review to provide an up to date picture of how this state should be diagnosed and managed. Methods We aim to describe how primary and secondary hypogonadism should be excluded before the diagnosis of late onset hypogonadism is reached....