Millions of men may have low testosterone
Conditions associated with hypogonadism

HIM Study Design

2162 eligible patients, all men aged ≥45 years visiting primary care practices in the... United States, underwent a serum testosterone assessment by a single morning (8 AM–noon) blood draw. Hypogonadism was defined as total testosterone level of <300 ng/dL. Common symptoms of hypogonadism, comorbid conditions, demographics, and reason for visit were recorded. Data were analyzed to determine hypogonadal prevalence rates overall, by demographic characteristics, by associated comorbid conditions, and by other variables.1

In a separate study of men with type 2 diabetes, it was estimated that up to 33% of diabetic men may also have hypogonadism.2

Study Design

A systematic review of 103 male patients with type 2 diabetes investigated the prevalence of... hypogonadism by measuring serum total testosterone, free testosterone, sex hormone–binding globulin (SHBG), luteinizing hormone (LH), follicle-stimulating hormone (FSH), prolactin, glucose, and hemoglobin A1c (HbA1c). Fasting blood samples were taken as part of the workup at initial visit. Hypogonadism was defined as low free testosterone (<50 pg/mL) or low calculated free testosterone (<64.8 pg/mL).2

THE ENDOCRINE SOCIETY SUGGESTS TESTING FOR LOW TESTOSTERONE IN MEN WITH TYPE 2 DIABETES.3

Signs and symptoms of low testosterone in the HIM Study

The 2010 Endocrine Society clinical guidelines suggest3:

  • Measuring morning total testosterone to diagnose hypogonadism in men with consistent signs and symptoms.
  • A second test measuring morning total testosterone to confirm the diagnosis.