Modern people talk about AIDS and turn pale. This is because AIDS is very harmful to the body, and it is an infectious disease, mainly because it is infected with HIV, which can cause damage to the immune system of the whole body. Once the immune system is damaged, various diseases of the body will occur, and the incubation period of AIDS varies, many even 10 years without onset, Therefore, HIV testing has become a very important part, how to detect HIV?
inspect
1. Check the immune function of the body
Mainly moderate or above cellular immune deficiency, including: CD4+T lymphocyte depletion, significant reduction of peripheral blood lymphocytes, CD4&200/ μ l. CD4/CD8&1.0, (1.25~2.1 for normal people), negative skin test for delayed type allergy, and low response to Mitosis stimulation. NK cell activity decreased.
2. Pathogen testing for various pathogenic infections
For example, pCR method is used to detect relevant pathogens and histopathological examination of malignant tumors.
3. HIV antibody testing
Enzyme linked immunosorbent assay, gelatin particle agglutination test, immunofluorescence assay, western blot assay, and radioactive Immunoprecipitation were used. The first three items were commonly used for screening tests, and the last two were used for confirmatory tests.
4. PCR technology for detecting HIV virus.
The testing method is to take venous blood for testing (that is, take blood at the corner of the arm). The steps to be taken at your own expense are roughly as follows: go to the hospital to register the dermatology department number, and explain to the doctor that Diagnosis of HIV/AIDS testing will be carried out (different hospitals may have different treatment methods, some doctors will register personal information, and some will not). The doctor may suggest that you check syphilis or other sexually transmitted diseases together (because people infected with AIDS are likely to be infected with other sexually transmitted diseases), At this time, according to your own needs, the doctor will issue a test form later; Take the test form to the payment office to pay (the cost includes the cost of testing reagents and blood sampling needles. There are two types of reagents, imported and domestic, and you are generally not allowed to choose. If you only test for HIV, the cost is approximately 40 yuan (for reference only), and then go to the blood sampling office to collect blood. Regarding the results, hospitals that test faster will produce results on the same day, while those that test slower will take about three days. The duration may vary depending on the hospital, and the test results will be presented in the form of a paper report. Generally, you can use your own medical card to scan the test form on a self-service printer and print it. Regarding the interpretation of results, there are three types of hospital test results: negative for non infection, positive for suspected infection, and undetermined need for further blood testing