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人體內(nèi)hiv抗體產(chǎn)生要多少天
2019-04-08 06:38
感染艾滋后，人體內(nèi)會(huì)產(chǎn)生抗艾滋病毒的特異抗體。目前我們確診艾滋的主要依據(jù)，便是化驗(yàn)血中是否存在艾滋抗體。但從被艾滋病毒感染至體內(nèi)產(chǎn)生艾滋抗體，需要數(shù)周至數(shù)月時(shí)間，在這段時(shí)間內(nèi)，因體內(nèi)未產(chǎn)生足夠的抗體，要確診艾滋，化驗(yàn)無能為力，這就是艾滋的窗口期。
艾滋病窗口期的長(zhǎng)短，與人體產(chǎn)生抗體的時(shí)間有關(guān)。許多朋友來電詢問窗口期的時(shí)間問題，有的問是否2周或1個(gè)月，也有的說是否要等6個(gè)月甚至1年的，那么窗口期到底多長(zhǎng)呢？體內(nèi)產(chǎn)生抗體的時(shí)間，并非人人一樣，而是有個(gè)體差異。有的人產(chǎn)生抗體快，只需要2～3周，有的人產(chǎn)生抗體慢，需數(shù)月，但絕大部分人感染艾滋后，都會(huì)在半年內(nèi)產(chǎn)生抗體。也就是說，艾滋的窗口期一般不超過半年。據(jù)有關(guān)資料介紹，人體感染HIV后2周血液中出現(xiàn)HIV抗體，一個(gè)月后95%以上的人可檢測(cè)出HIV抗體，個(gè)別人抗體出現(xiàn)較遲。
艾滋病窗口期有多長(zhǎng)還與試劑的靈敏度有關(guān)。試劑靈敏度高時(shí)，感染早期體內(nèi)剛剛能產(chǎn)生少量抗體時(shí)，即可檢出，窗口期就短。若試劑靈敏度不高，要等到體內(nèi)能產(chǎn)生大量抗體的時(shí)候才能檢出，窗口期就長(zhǎng)。
感染艾滋病毒后部分產(chǎn)生抗體快的人，可在數(shù)周內(nèi)產(chǎn)生抗體。如果用的是第三代試劑，窗口期便是3～4周，因此，可在有可疑接觸后3周去正規(guī)醫(yī)療單位作化驗(yàn)。部分人產(chǎn)生抗體慢，但一般不會(huì)超過半年。第1次檢測(cè)結(jié)果是陰性，還可每隔2～3個(gè)月再次檢測(cè)，連續(xù)2次。若前后3次均陰性，一般可排除艾滋感染。
Infected with AIDS, the body produces specific antibodies against HIV. The main basis for our current diagnosis of AIDS is the determination of the presence of AIDS antibodies in blood. But it takes weeks to months to produce antibodies to AIDS from HIV infection to the body. During this time, due to the lack of sufficient antibodies in the body, the diagnosis of AIDS is not possible. This is the window for AIDS.
The length of the AIDS window is related to the time the body produces antibodies. Many friends called to ask about the time of the window period. Some asked whether it was 2 weeks or 1 month, and some said whether it was necessary to wait for 6 months or even 1 year. How long is the window period? The time for the body to produce antibodies is not the same as everyone, but there are individual differences. Some people produce antibodies quickly, only 2 to 3 weeks. Some people produce antibodies slowly and take months, but most people will produce antibodies within six months after they are infected with AIDS. In other words, the window of AIDS generally does not exceed six months. According to relevant information, HIV antibodies appear in the blood 2 weeks after HIV infection in the human body. More than 95 % of people can detect HIV antibodies one month later, and individual antibodies appear later.
The length of the AIDS window is also related to the sensitivity of the reagent. When the reagent is highly sensitive, it can be detected when a small amount of antibodies can be produced in the early stage of infection, and the window period is short. If the reagent is not sensitive, it must wait until the body can produce a large number of antibodies before detection, and the window period will be long.
People who produce antibodies in the post-HIV section can produce antibodies within a few weeks. If a third-generation reagent is used, the window period is 3 to 4 weeks. Therefore, it can be tested at a regular medical unit 3 weeks after suspicious exposure. Some people produce antibodies slowly, but generally no more than half a year. The first test result was negative, and it can be tested again every 2 to 3 months, twice in a row. If all three times are negative, AIDS infection can generally be excluded.
Infected with AIDS, the body produces specific antibodies against HIV. The main basis for our current diagnosis of AIDS is the determination of the presence of AIDS antibodies in blood. But it takes weeks to months to produce antibodies to AIDS from HIV infection to the body. During this time, due to the lack of sufficient antibodies in the body, the diagnosis of AIDS is not possible. This is the window for AIDS.
The length of the AIDS window is related to the time the body produces antibodies. Many friends called to ask about the time of the window period. Some asked whether it was 2 weeks or 1 month, and some said whether it was necessary to wait for 6 months or even 1 year. How long is the window period? The time for the body to produce antibodies is not the same as everyone, but there are individual differences. Some people produce antibodies quickly, only 2 to 3 weeks. Some people produce antibodies slowly and take months, but most people will produce antibodies within six months after they are infected with AIDS. In other words, the window of AIDS generally does not exceed six months. According to relevant information, HIV antibodies appear in the blood 2 weeks after HIV infection in the human body. More than 95 % of people can detect HIV antibodies one month later, and individual antibodies appear later.
The length of the AIDS window is also related to the sensitivity of the reagent. When the reagent is highly sensitive, it can be detected when a small amount of antibodies can be produced in the early stage of infection, and the window period is short. If the reagent is not sensitive, it must wait until the body can produce a large number of antibodies before detection, and the window period will be long.
People who produce antibodies in the post-HIV section can produce antibodies within a few weeks. If a third-generation reagent is used, the window period is 3 to 4 weeks. Therefore, it can be tested at a regular medical unit 3 weeks after suspicious exposure. Some people produce antibodies slowly, but generally no more than half a year. The first test result was negative, and it can be tested again every 2 to 3 months, twice in a row. If all three times are negative, AIDS infection can generally be excluded.
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