Testosterone therapyįor people who are worried about low or high testosterone, a doctor may perform a blood test to measure the amount of the hormone in the patient's blood. Women with polycystic ovarian syndrome have high levels of male hormones, including testosterone, which can be a cause of infertility. High testosterone levels can cause problems in women, including irregular menstrual cycles, increases in body hair and acne, and a deepening of the voice. It is important to note, however, that conditions other than low T can cause erectile dysfunction, such as diseases in the nerves or blood.ĭoctors typically to treat men for hypogonadism if they have symptoms of low testosterone and their testosterone levels are below 300 nanograms per deciliter. Depression, irritability and inability to concentrate.The National Institutes of Health includes the following as possible symptoms of low testosterone: Testosterone levels vary wildly, and can even differ depending on the time of day they're measured (levels tend to be lower in the evenings). Levels of testosterone naturally decrease with age, but exactly what level constitutes " low T," or hypogonadism, is controversial, Harvard Medical School said.