+91-8010977000 | elisa 4th generation window period,Delhi
elisa 4th generation window period:-HIV testing technologies are used to determine if a person has HIV. Several types of HIV testing technologies are used in Canada. These tests differ in several ways, including where the test is conducted, how the test detects HIV infection, the length of its window period, and how long it takes to receive results.
How are testing technologies used to diagnose HIV infection?
To test for HIV, a sample of a person’s blood is taken (either a vial of blood from a vein or a couple of drops of blood from a finger prick). This blood is either tested immediately for HIV at the location it was taken – also known as rapid or point-of-care (POC) testing – or it is sent to a laboratory to be tested for HIV (standard testing).
While the removal of blood for HIV testing can be conducted in a variety of different settings in Canada – including hospitals, health clinics and in the community – it must always be performed by a trained individual.
Laboratory testing
Most HIV testing of blood samples is conducted in a laboratory. This type of testing requires a vial of blood to be taken by a trained individual and sent to a laboratory for analysis.
The first test used at a laboratory to analyze a blood sample is referred to as a screening test. All laboratories in Canada use fourth-generation HIV testing technologies for screening blood samples.
If a fourth-generation screening test indicates that the person who gave the blood sample does not have HIV (also known as a non-reactive test or testing negative or HIV negative), no further testing is normally performed and the negative result is sent back to the healthcare provider or clinic that ordered the test.
If the screening test indicates that the person is infected with HIV (also known as a reactive test or testing positive or HIV positive), then a confirmatory test is performed to ensure the screening test was correct. If the confirmatory test indicates that the person is HIV positive, the positive result is sent back to the healthcare provider or clinic that ordered the test. If the confirmatory test is indeterminate (that is, unable to determine whether the result is positive or negative) or provides a different result from the screening test, then a supplementary test may be used at the laboratory or it may be sent to another laboratory for further testing to confirm if the result is negative or positive.
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How are testing technologies used to diagnose HIV infection?
To test for HIV, a sample of a person’s blood is taken (either a vial of blood from a vein or a couple of drops of blood from a finger prick). This blood is either tested immediately for HIV at the location it was taken – also known as rapid or point-of-care (POC) testing – or it is sent to a laboratory to be tested for HIV (standard testing).
While the removal of blood for HIV testing can be conducted in a variety of different settings in Canada – including hospitals, health clinics and in the community – it must always be performed by a trained individual.
Laboratory testing
Most HIV testing of blood samples is conducted in a laboratory. This type of testing requires a vial of blood to be taken by a trained individual and sent to a laboratory for analysis.
The first test used at a laboratory to analyze a blood sample is referred to as a screening test. All laboratories in Canada use fourth-generation HIV testing technologies for screening blood samples.
If a fourth-generation screening test indicates that the person who gave the blood sample does not have HIV (also known as a non-reactive test or testing negative or HIV negative), no further testing is normally performed and the negative result is sent back to the healthcare provider or clinic that ordered the test.
If the screening test indicates that the person is infected with HIV (also known as a reactive test or testing positive or HIV positive), then a confirmatory test is performed to ensure the screening test was correct. If the confirmatory test indicates that the person is HIV positive, the positive result is sent back to the healthcare provider or clinic that ordered the test. If the confirmatory test is indeterminate (that is, unable to determine whether the result is positive or negative) or provides a different result from the screening test, then a supplementary test may be used at the laboratory or it may be sent to another laboratory for further testing to confirm if the result is negative or positive.
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