A positive test result is the opposite of a negative test result. A positive test result means that the test was detected. If the test is for HIV antibodies, a positive result means that HIV antibodies can be detected in the blood. HIV antibodies generally appear only after HIV infection, but not in other cases, so a positive result means that a person is likely to be an AIDS patient or HIV carrier. If the test is positive for hepatitis C, it also means that the person has been infected with the hepatitis C virus; if the test is positive for hepatitis B surface antibody, it means that the person has acquired immunity to the hepatitis B virus; if the test is positive for hepatitis B core antibody, it means that the person has been infected with the hepatitis B virus. So the specific meaning should be judged in relation to the specific items.