What is a normal to high for testosterone?

Normal testosterone levels for adult males typically range from about 300 to 1,000 ng/dL (nanograms per deciliter), while for adult females, normal levels are generally between 15 to 70 ng/dL. Levels above these ranges can be considered high. However, variations can occur based on age, health, and the specific laboratory reference ranges used. It's important to consult a healthcare provider for personalized interpretation of testosterone levels.