What Is Acute Hiv Infection
There are three stages of HIV infection:
- Stage 1:Acute HIVinfection
- Stage 2:Chronic HIV infection
- Stage 3:AIDS
Acute HIV infection is the first stage of the infection. Usually within two to four weeks of infection, two-thirds of those with HIV will experience flu-like symptoms. These symptoms may last for several days or even weeks. However, some people may experience no symptoms at all.
In this stage, there is a large amount of HIV in your blood, which is known as the viral load. Studies have noted incredibly high viral loads during the acute stage, meaning you are more contagious at this time.
How Long Does It Take To See The Signs Of Hiv
The signs and symptoms of HIV may first appear within two to four weeks of infection. The stage in which the symptoms appear is called the stage of acute HIV infection. The symptoms appear due to the resistance or fight of the immune system against HIV. In the initial stage, the virus multiplies rapidly and spreads throughout the body. It targets and destroys the CD4 cells . As a result, the level of HIV in the blood and the chances of transmission at this stage are very high. It is crucial to recognize the early signs and seek medical help, since early diagnosis and treatment of HIV gets the best results.
Enhancing Healthcare Team Outcomes
In order to detect undiagnosed HIV, the entire healthcare system needs to integrate HIV screening practices. Routine HIV screening can easily be offered not only in established at-risk populations, such as areas of high prevalence or in the prenatal care standards, but also in specialist offices such as dermatology, ENT, or general surgery. Widening HIV screening to include all persons ages 13-75 should not be limited to the primary care office, especially in patients who are less likely to access care in this setting.
Emergency room HIV testing is becoming accepted as an essential component of HIV detection. Non-targeted screening in the emergency department was found to have improved acceptance based on where in the patient’s process it was offered and what test was offered. Linking HIV and HCV screening has been shown to also be effective and efficient.
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When Should You Get Tested For Hiv After Condomless Sex
Keep in mind, if you believe youve been exposed to HIV, its important to see a healthcare professional as soon as possible.
Theres no HIV test that can accurately detect HIV in the body immediately after exposure. Theres a time frame known as the window period before you can be tested for HIV and receive accurate results.
Regardless of the type of test you take after a potential HIV exposure, you should get tested again after the window period has passed to be certain.
People at higher risk of contracting HIV should get regularly tested as often as every 3 months.
What Is Hiv Testing
HIV testing, also called HIV screening, is the only way to know if you have the virus.
Several types of tests check your blood or other body fluids to see whether you’re infected. Most can’t spot HIV right away, because it takes time for your body to make antibodies or for enough of the virus to grow inside you.
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How Soon Can Hiv Be Detected By A Test
Most modern HIV tests are fourth or fifth generation tests, and can detect the virus in your blood from as early as 45 days after possible exposure.
Other types of test require more time to have passed. Rapid tests and self-test kits may not be able to detect HIV in your sample until three months after exposure.
How Long Does It Take To Show Symptoms Of Hiv
The human immunodeficiency virus is a virus that attacks your bodys immune system. Left untreated, it can lead to acquired immunodeficiency syndrome . Early diagnosis is key to slowing down disease progression.
Symptoms may vary from person to person, but knowing the early symptoms that could present can help you get diagnosed and treated as soon as possible.
This article will discuss the various stages of HIV, how symptoms may present, how testing works, and what to expect if you test positive for the virus.
Verywell / Danie Drankwalter
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Cost And Health Insurance
Most insurance plans, including Medicare and Medicaid, will cover the cost in full as part of the Affordable Care Acts essential health benefits.
It is important to note that, while point-of-care tests are typically covered by insurance, at-home test kits may not be. Check with your insurance provider to better understand your benefits in this regard.
If you are uninsured, you can find low- to no-cost testing sites through the GetTested locator offered by the Centers for Disease Control and Prevention .
Hiv Testing In A Health Care Setting Or Lab
If you take a test in a health care setting or a lab, a health care provider or lab technician will take your sample . If its a rapid test, you may be able to wait for the results, but if its a laboratory test, it can take several days for your results to be available. Your health care provider or counselor may talk with you about your risk factors, answer any questions you might have, and discuss next steps with you, especially if your result is positive.
- If the test comes back negative, and you havent had an exposure during the window period for the test you took, you can be confident you dont have HIV.
- If your HIV test result is positive, the lab will conduct follow-up testing, usually on the same sample as the first.
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How Long Are The Window Periods Of Different Hiv Tests
It is hard to say exactly how long the window period lasts, as there are variations between individuals and it is a difficult topic to research .
Nonetheless, a study by Dr Kevin Delaney and colleagues calculated window periods for a range of HIV testing assays. All these analyses were based on plasma samples. Window periods are likely to be several days longer when testing samples of fingerprick blood or of oral fluid, as will be normal when using rapid, point-of-care tests and self-testing devices. Unfortunately, precise figures for how much longer the window periods are have not yet been published.
The researchers analysis confirms that fourth-generation laboratory tests detect HIV infections between one and three weeks earlier than older antibody-only tests. Moreover, their data suggest that some countries guidelines which recommend retesting 90 days after a possible exposure to HIV are more cautious than they need to be.
Afourth-generation laboratory testis recommended in UK and US guidelines. It uses a sample of blood plasma or serum and can detect immunoglobulin G antibodies, immunoglobulin M antibodies and p24 viral antigen . Commonly used tests of this type include Abbott Architect HIV Ag/Ab, GS Combo Ag/Ab EIA and Siemens Combo HIV Ag-Ab.
- The median window period is 18 days . This indicates that half of all infections would be detected between 13 and 24 days after exposure.
- 99% of HIV-infected individuals would be detectable within 44 days of exposure.
Why Should I Get Tested If I Am Pregnant
If you are pregnant, it is important to determine if you have HIV so you can be treated. Treatment of HIV-infected mothers during pregnancy, precautions at birth, and avoiding breast-feeding can minimize the risk of passing the infection from mother to child. If you are already taking HIV medications when you become pregnant, you should continue to do so during pregnancy and labor and delivery. If you are not taking HIV medications or have a high viral load during pregnancy, giving the antiretroviral drug zidovudine intravenously during labor and delivery and also to the newborn twice a day by mouth for 6 weeks reduces the rate of transmission from 25-33% to about 1-2%.
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How Long Does It Take For Hiv To Show Up
According to the Centers for Disease Control and Prevention , early-stage HIV symptoms typically occur around two-six weeks following exposure . With that in mind, the majority of people with HIV will develop antibodies around this time and should test positive if they have the infection.
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What Are The Symptoms Of Hiv Infection
Symptoms of the initial HIV infection can mimic those of influenza and other viral infections. The only reliable way to tell if you are infected is to get tested. Many people with HIV do not experience symptoms for years after the initial infection or have symptoms that are very similar to symptoms of other illnesses. For more, see this CDC web page: About HIV.
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How Soon Can I Take An Hiv Test
This question usually refers to how soon after exposure can someone test for HIV.
This used to involve waiting 3 to 4 weeks before taking an HIV test .
However, 2020 UK guidelines now recommend waiting 6 weeks.
This is because 4th generation HIV tests will detect 99% of infections at 6 weeks compared to 95% of infections 4 weeks after exposure.
A negative test after four weeks needs to be confirmed with a second test three months after the risk. This is to cover the small chance that you take longer than four weeks to generate an antibody response.
Extending this to 6 weeks means the confirmatory test is no longer needed.
In high risk exposures, especially if symptoms occur, viral load testing is sometimes used after one week. This includes after a sexual assault or after a needlestick injury to a healthcare worker.
In these cases a viral load test can exclude an infection when there are symptoms.
Viral load tests are not approved to diagnose HIV. A negative result still needs to be confirmed by an antibody test three months after the risk.
Figure 6: Recommended time from exposure to HIV test *
* This diagram needs to be updated to show the six-week window.
Timing Of Serological Testing In Infants
The most recent advances in EIA technology have produced combination assays, which allow for the simultaneous detection of p24 HIV antigen and HIV antibodies. This approach has further shortened the window period, i.e. the interval between HIV infection and detectable HIV antigen/antibodies. Rapid tests appear to offer similar performance characteristics but they detect antibody 28 days later than third-generation EIAs.
All children born to HIV-infected mothers carry detectable maternal HIV antibody and this declines slowly over the first year of life. The rate of decay of maternal antibody has been ascertained largely by analysis of studies to detect HIV antibody in children who have not been breastfed. The mean and/or median age at the time of seroreversion ranges between 9 and 16 months of age in studies from both developed and developing countries . These data indicate that maternal antibody may remain detectable through the first 6 months of life but significant decay occurs by 912 months of age. Most HIV-uninfected children do not have detectable antibody at 12 months of age .
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When You Should Take An Hiv Test
What testing service you should use, and which type of test, depends on when you might have been exposed to HIV. Signs of HIV infection dont show up in the blood right away. It normally happens within four weeks of infection, but can be longer.
If you think you might have been exposed to HIV in the last 72 hours , its possible to take post-exposure prophylaxis to help stop an infection from happening.
If your risk was recent, then your test provider will probably advise you to take a test immediately, followed by a second one a few weeks later. The second test will pick up any infection the first one may have missed.
If your risk was in the last three months, make sure you tell the person testing you, as it may affect the type of test youre given.
A self test is not guaranteed to pick up an infection thats occurred in the previous three months. If you think youve been exposed in the last three months, you should get a test in person.
Very occasionally it can take up to three months for antibodies to appear in the blood, so an HIV negative result is only totally accurate if three months have passed between the test and the last time a risk was taken. However, a negative result four to eight weeks after taking a risk is a very good sign that HIV infection hasnt happened.
Can A Blood Test Detect All Stds
There are also some STDs that cannot be detected by a blood test. These include:
- Gonorrhea
- Trichomoniasis
- HPV
The organisms that cause these diseases generally dont enter the bloodstream. Instead, they stay within the genital and urinary tracts. Because of this, a blood test is not the right type of test for these diseases. For HPV, testing generally uses a swab of the cervix, which is the entrance to the uterus. This swab is known as a Pap smear, and is usually performed as part of your regular gynecologist check. For the other diseases on this list, a urine test is most common, and a vaginal or urethral swab test can also be used.
It is possible to do a blood test for antibodies to these diseases. Antibodies are proteins that are produced by your immune system in response to an infection. However, this type of test would only indicate that you have been exposed at some point in the past, but doesnt indicate whether you have a current infection. For example, if you have antibodies to the bacteria that cause gonorrhea, this means you have been exposed to gonorrhea at some point, but it doesnt mean that you currently have gonorrhea. Because of this, the antibody test is not very useful, and this type of test for these STDs is rarely performed.
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Are These Figures Always Accurate
In some situations, these figures should be interpreted with caution:
- When tests are done with samples of fingerprick blood or oral fluid , their window periods are likely to be longer.
- Individuals who are taking pre-exposure prophylaxis or post-exposure prophylaxis may have a delayed antibody response, extending the window period.
- The data are based on individuals with HIV-1 subtype B and its possible that tests are less sensitive to other subtypes.
British HIV Association, British Association for Sexual Health and HIV and British Infection Association. Adult HIV Testing Guidelines 2020.
Delaney KP et al. Time from HIV infection to earliest detection for 4 FDA-approved point-of-care tests. Conference on Retroviruses and Opportunistic Infections, abstract 565, 2018.
What Does The Hiv Test Involve
The Centers for Disease Control and Prevention recommend that all people between the ages of 13 and 64 be tested at least once for HIV. People with known risk factors should be tested yearly, or more frequently.
HIV tests are very accurate, but no test can detect the virus immediately after transmission. How soon a test can detect HIV depends on what the test is looking forantibodies, antigens, or the virus itself.
HIV testing uses a blood draw, a finger stick, or an oral swab. The type of sample used depends on the test.
These three types of diagnostic tests are used to detect HIV:
Antibody and antigen/antibody tests are typically used first because they are less expensive and easier to administer. They may also detect signs of HIV sooner. A NAT test may be used to confirm a positive result on an antibody or antigen/antibody test, or if these tests are negative and there is a strong suspicion for new HIV infection.
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When To Get Tested
Seek medical advice immediately if you think there’s a chance you could have HIV. The earlier it’s diagnosed, the earlier you can start treatment and avoid becoming seriously ill.
Some HIV tests may need to be repeated 1-3 months after exposure to HIV infection, but you should not wait this long to seek help.
A GP or a sexual health professional can talk to you about having a test and discuss whether you should take emergency HIV medicine.
Anti-HIV medicine called post-exposure prophylaxis may stop you becoming infected if taken within 72 hours of being exposed to the virus.
Who Should Get An Hiv Test
The CDC recommends that everyone in the United States between the ages of 13 and 64 get tested for HIV at least once.
You should be tested more often — at least once a year — if youâre at higher risk of getting HIV, including if you:
- Have had several sexual partners
- Had unprotected sex with someone who is or could be HIV-positive, including someone whose sexual history you don’t know
- Injected drugs with a needle, syringe, or other device that someone else used first
- Have had or are getting tested for tuberculosis, hepatitis, or any sexually transmitted disease, including syphilis, gonorrhea, chlamydia, or herpes
- Have had sex for drugs or money
- Had sex with someone who has a history of any of these
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What Is A Window Period
All HIV tests have a window period. This is the period of time between when a person has been exposed to the virus and when a test can detect its presence in their body. If a person with HIV is tested before the window period has passed, it can produce false-negative results.
HIV tests are more accurate if theyre taken after the window period has passed. Some types of tests have shorter window periods than others. They can detect HIV sooner after exposure to the virus.