Yes, blood testing diagnoses abnormal testosterone levels. Moreover, you have to inform the doctor about any herbal remedies or drugs that you take as certain medications can impact the results of your test.

Generally, prescription medicines and over-the-counter medicines do not affect the results of the testosterone total blood test. However, it is necessary to consult with the doctor about continuing the use of medications before having the testosterone total test. The healthcare practitioner may also ask you to not eat by midnight and then only take a few water sips in the morning.

Testosterone therapy is the generally recommended treatment for treating hypogonadism. But this therapy is still not recommended to older individuals who are healthy too, even if their testosterone levels are slightly less than the normal range. Moreover, there are certain risks associated with taking prescription testosterone. Injections of testosterone can be mostly safe if the individual follows the instructions of the doctor.

According to a study by Harvard Medical School, excessive natural testosterone is generally not a problem for men. However, anabolic steroids and testosterone replacement therapy (TRT) can cause high testosterone levels which are harmful to health.