How long is the AIDS window period? How long is the AIDS window period?

How long is the AIDS window period, and how long does it take to test negative for HIV antibodies to be truly uninfected? According to experts, the first thing to explain is a concept, that is, we do a blood test, the test is a blood test, this test is the blood of HIV antibodies, if you check the blood of HIV antibodies, it means that you are HIV infected, you have HIV in your body. However, it takes time from the time the HIV virus enters the body to the production of antibodies, which is generally three weeks to two months, and we cannot detect it until the antibodies are produced.

It is possible that when the test is tested, there is no HIV antibody, but the virus is already in the body, and the situation that there is a virus in the body but the antibody cannot be detected during this time is the window period. <>

It's good for people like this to die early and be reincarnated early.

The period between when HIV enters the body and when a sufficient amount of HIV antibodies are produced in the bloodstream that can be detected by a test is medically known as the window period. With current technology, HIV infection can be detected as early as about 2 weeks after exposure, and the window period for a few people is between 8 weeks and 3 months, and the longest is not more than 3 months.

The window period for AIDS is usually 4 to 12 weeks, and 4 to 12 weeks is the CDC standard. Due to the different detection methods and technologies, the window period is different, the window period for nucleic acid testing is 1 2 weeks, the window period for the fourth generation test is 4 weeks, and the window period for the third generation test is 6 weeks, and the longest is not more than three months.

HIV testing is antibodies, which can be detected as long as antibodies are produced, and the production of antibodies is a period of time, called the window period. The time it takes for antibodies to be produced varies from person to person, the earliest is more than a week, the average is 25-35 days, and the latest is three months.

With the improvement of testing technology, the current WHO standard is a window period of one to one and a half months for high-risk behaviors, which can be basically determined. The standard set by our country is three months, after which the diagnosis is confirmed.

4th generation reagent (check antigen + antibody) – window period is 4 weeks. Because the antigen reaches the peak of replication at 3-4 weeks, at this time, if the 4th generation reagent is infected, at least one of the antigen and antibody is positive, and if all are negative, it is excluded.

3rd generation reagents (antibodies only) – window period is 6 weeks.

The above is the result of theoretical analysis + clinical experience, which can be said to be accurate.

However, at present, the FDA, CDC and reagent manufacturers have reached a unified consensus, that is, for ordinary people, the most conservative window period is 3 months. Whatever the reagent, it was 100% excluded at 3 months. This is also the standard of the CDC in the United States.

Hello patients with congenital immunodeficiency, who have recently had major surgeries, and people like cancer patients will make the window period longer.

The latest World Health Organization (WHO) published window period (relative to current reagents) is two weeks to one month. Three months was the definition of ten years ago, and it is long outdated. However, domestic doctors are generally conservative and responsible, and generally take six weeks as the window period.

Two weeks to six months, usually three months.

CD8+ cells are poorly active. This article is not very certain because there is no clear literature.