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Doctor insights on: 4th Generation Hiv Test

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I did 4th Generation HIV test after around 4,5,6,7,8,9,10,11,12,14,15 weeks of an exposure. Is this 100% conclusive? can i get back safely to my wife

I did 4th Generation HIV test after around 4,5,6,7,8,9,10,11,12,14,15 weeks of an exposure.
Is this 100% conclusive? can i get back safely to my wife

Sero-conversion: The whole concept of delayed sero-conversion dates back to old & sloppy tests. PCR testing now will show virus in the blood with or without antibodies. If you need to cling to the old adages...at 6 months..99.99% of the population will have developed antibodies after an exposure..thus the 6 month window. I believe a colleague of mine Lyssette Cardona, MD is in Dubai..she's one of the best!! ...Read more

Dr. Austina Cho
16 doctors shared insights

Hiv (Definition)

Hiv infection is caused by a retrovirus....This retrovirus binds to CD4 cells (for the most part). You may detect the virus by several different methods. An elisa test (enzyme linked immunosorbent assay). You may also detect it by doing a test referred to as a western blot (a gel protein electrophoresis). Thirdly by pcr (polymerase chain reaction) which ...Read more


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What is the window period for p42 antigen/ antibody dual 4th gen HIV test? And the window period for HIV RNA PCR test? When can it be conclusive?

What is the window period for p42 antigen/ antibody dual 4th gen HIV test? And the window period for HIV RNA PCR test? When can it be conclusive?

See below: Please consult this site for a detailed answer. Nucleic acid tests are conclusive about a month after acquiring infection. http://www.sfaf.org/hiv-info/testing/hiv-test-window-periods.html ...Read more

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What is the most accurate type of HIV test?

What is the most accurate type of HIV test?

Serology: A standard serology (elisa, with western blot confirmation of positive results). ...Read more

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How accurate is 4th generation HIV test at 25 days?

How accurate is 4th generation HIV test at 25 days?

Very accurate at 25: days(approx 1 month).. You should get tested again at 6 months to be sure. ...Read more

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I would like to know if the 4th generation HIV test is conclusive at 7 months?

I would like to know if the 4th generation HIV test is conclusive at 7 months?

Yes, conclusive: These tests are conclusive any time 6 weeks or more after the last possible exposure. Don't have any more tests unless and until you may be reexposed. ...Read more

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Hey, How accurate is negative result of duo 4th generation HIV test after 10 WEEKS?

Hey, How accurate is negative result of duo 4th generation HIV test after 10 WEEKS?

99.8%: A WHO evaluation of five tests found that each had a sensitivity of 100%.2 A French evaluation of twelve tests found that nine had a sensitivity of 100%. Two tests did fail to identify a single HIV-positive sample (of 669 tested), and were judged to have a sensitivity of 99.8%. These tests were the Vidas Duo and Enzygnost HIV Integral. The samples missed were of subtypes F and C.3 ...Read more

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I had 10 4th generation HIV test combo out to 7 month from my exposure. All were negative, is it enough?

I had 10 4th generation HIV test combo out to 7 month from my exposure. All were negative, is it enough?

Yes: Be thankful for good health. Cherish the memory of having loved and been loved, imperfect as it may have been -- human love always is. Learn, and be thankful and glad that you're wiser now than you once were. Be proud that you're a man, and love responsibly and well from now on. Best wishes. ...Read more

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I did 4th Generation HIV test after around 4,5,6,7,8,9,10,11,12,14,15 weeks of an exposure. Is this 100% conclusive? can i get back safely to my wife

Sero-conversion: The whole concept of delayed sero-conversion dates back to old & sloppy tests. PCR testing now will show virus in the blood with or without antibodies. If you need to cling to the old adages...at 6 months..99.99% of the population will have developed antibodies after an exposure..thus the 6 month window. I believe a colleague of mine Lyssette Cardona, MD is in Dubai..she's one of the best!! ...Read more

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What is the long term accuracy of 4th generation HIv test say 2, 4, 6, 10, years after infection.

What is the long term accuracy of 4th generation HIv test say 2, 4, 6, 10, years after infection.

One hundred percent: The 4th generation HIV tests -- also called "duo" or "combo" test because they include two tests in one: HIV antibody and p24 antigen, a protein in the outer coat of the virus. These tests become positive within 4 weeks of a new infection. Once positive, they remain positive for life. There are no exceptions. ...Read more

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4th generation HIV test was neg, for antibodies and reactive for antigens. RNA test was negative. Am I now confirmed negative for HIV?

4th generation HIV test was neg, for antibodies and reactive for antigens.  RNA test was negative.  Am I now confirmed negative for  HIV?

HIV testing: F of unknown age, sexual and medical history notes: 4th generation HIV test was neg, for antibodies and reactive for antigens. RNA test was negative. Am I now confirmed negative for HIV? ANS: Depends on the prevalence of HIV in your area, how recent an infection might have been acquired & lab error. If exposure to HIV likely would retest n 3 months but discuss with team doing testing. ...Read more

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Would a 4th generation hiv blood test be accurate if I take one today at exactly 33 days? Or should I wait longer?

Depends: You may wish to wait to 6 months after exposure to avoid false negative from testing too early. It would be better to get a HIV nucleic acid test at 6 months after exposure. For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex. ...Read more

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With todays ultra sensitive modern ELISA tests, what use is the western blot for hiv? A few months ago i received a weakly reactive cmia HIV ag/ab test, a 4th generation HIV combo test, and this was followed by a negative western blot and a negative p24 t

False-positives: Screening tests are designed to be highly sensitive so they don't miss anyone with the disease. However, they can be so sensitive that they occasionally give a false-positive result. That is, the test appears positive for someone without the disease. The western blot, being time consuming and extra cost, is only used to make sure a positive is really a positive. Talk with your doc for more info. ...Read more

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Dr. Lisa Oldson
368 doctors shared insights

Hiv Test (Definition)

There are several ways to detect the HIV virus. The first is by antibodies. This includes eia (enzyme immuno assay). The rapid HIV tests are these types. The second way detects proteins on the viral coat (western blot). This is a gel plate electrophoresis. Thirdly there is pcr (polymerase chain reaction). This detects and amplifies dna allowing a viral ...Read more


Dr. Ed Friedlander
1,456 doctors shared insights

Human Immunodeficiency Virus (Definition)

Human immunodeficiency virus (HIV) is a lentivirus (a member of the retrovirus family) that causes acquired immunodeficiency syndrome (aids), [1][2] a condition in humans in which progressive failure of the immune system allows life-threatening opportunistic infections ...Read more