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Western Blot Test For HIV

  • Sample Type : Blood
  • Parameters : 1
  • Report Time : 24/48 Hrs
  • Home Collection: Yes
OFFER PRICE:  ₹2820 ₹3500 30% off


hiv western blot
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The Western blot test is a confirmatory test used to detect antibodies specific to HIV-1 and HIV-2 in a person's blood. It is often performed following a positive result on an initial HIV screening test, such as an HIV antibody test or an HIV rapid test. The Western blot test helps to confirm the presence of HIV infection and differentiate between HIV-1 and HIV-2.

Confirmation of positive HIV screening test: When an initial HIV screening test, such as an HIV antibody test or an HIV rapid test, yields a positive result, a Western blot test is performed to confirm the presence of HIV infection. It helps differentiate between true HIV infection and false-positive results, which can occur due to various factors like cross-reactivity or non-specific antibody binding in the screening tests.

  • Indeterminate or inconclusive HIV test results: In some cases, the initial HIV screening test may produce an indeterminate or inconclusive result. This could be due to a borderline or weak positive result or the presence of antibodies that do not clearly meet the criteria for a positive result. In such situations, a Western blot test may be recommended to provide further clarification and confirmatory evidence of HIV infection.
  • Differentiation between HIV-1 and HIV-2: The Western blot test can help differentiate between HIV-1 and HIV-2 infections. While HIV-1 is the predominant strain worldwide, HIV-2 is mainly found in certain regions, such as West Africa. Differentiating between the two strains is important for appropriate management and treatment decisions.
  • Evaluation of discordant test results: In rare cases, discrepancies or inconsistencies may arise between different HIV screening tests, such as one test yielding a positive result while another produces a negative or indeterminate result. In such situations, a Western blot test can help provide clarity and confirm the true HIV status.
  • Testing in infants born to HIV-positive mothers: Western blot testing may be performed in infants born to HIV-positive mothers to determine if they have acquired HIV infection during childbirth or through breastfeeding. It is used in conjunction with other diagnostic tests, such as PCR (polymerase chain reaction) testing for HIV DNA or RNA, to establish an accurate diagnosis.

A blood sample is collected from the individual undergoing testing. The sample is typically obtained through a venipuncture (blood draw) from a vein in the arm. The collected blood sample is sent to a laboratory equipped with the necessary equipment and expertise to perform the Western blot test.

The pattern of bands or lines on the membrane is examined and interpreted by trained laboratory personnel. The Western blot test looks for the presence of specific HIV proteins, such as p24, gp41, and gp120/160. Interpretation is based on the presence or absence of bands and their intensity. The presence of specific bands indicates the presence of HIV antibodies, confirming HIV infection. The absence of bands or the presence of bands in certain positions may indicate a negative or indeterminate result, requiring further evaluation. The Western blot test is considered the gold standard confirmatory test for HIV infection due to its high specificity. It helps to distinguish between true HIV infection and false-positive results from screening tests. It is important to note that the Western blot test is complex and requires skilled interpretation, and false-positive or indeterminate results can occur.

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FAQs around Western Blot Test For HIV

The Western Blot Test For HIV cost is Rs.3500, although it is now available for Rs.2820 because of the offer.

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  • Disclaimer: HealthcareOnTime offers extensively researched information, including laboratory testing for health screening. However, we must emphasize that this content is not intended as a substitute for professional medical advice or diagnosis. Always prioritize consulting your healthcare provider for accurate medical guidance and personalized treatment. Remember, your health is of paramount importance, and only a qualified medical professional can make precise determinations regarding your well-being. Protection Status Protection Status Protection Status