This saliva hormone test measures levels of testosterone, DHEA, and DHT, three hormones which have a strong influence over men's overall health and well being. Testosterone affects muscle development and sexual performance and drive, as well as bone density and cardiovascular health. Research has linked DHEA to healthy immune function as well as sleep quality and general well-being. DHT (dihydrotestosterone) is responsible for several of the androgenic effects of testosterone like facial hair, genetic balding, and male reproductive organ development. Common side effects of DHT are acne and accelerated balding.*