The main diseases determined by the blood-borne pathogen test include AIDS and hepatitis B and C, according to the National Institute of Health. While hepatitis B and C viruses cause hepatitis B and C respectively, the human immunodeficiency virus is responsible for AIDS.
Blood-borne pathogens are disease-causing germs that reside in the blood, explains the National Institute of Health. A person may contract the human immunodeficiency virus and hepatitis B and C viruses if he pierces or cuts himself with an object infected with these viruses. Joint fluid or spinal fluid can also transmit the human immunodeficiency virus, as can semen, breast milk, and vaginal and amniotic fluids.