Question 1

what is the accuracy of the "non rapid"  hiv a/b testing? i had a negative test 1 month ago and no possible exposure in 2 years. thanks!

Accepted Answer

Nearly conclusive: Almost certainly you weren&#x27;t infected. The most commonly used HIV antibody tests (&quot;3rd generation&quot; tests) detect around 95% of infections by 4 weeks, but testing at 6-8 weeks is needed for a conclusive result. The newer &quot;4th generation&quot; (antigen-antibody) tests are conclusive any time 4 weeks or more after exposure. Check with the doctor&#x27;s office or lab about which you had.

Question 2

does possibly contracting hepatitis affect the results accuracy of hiv combo testing? would be single exposure. last negative for both test was @ 50 days?

Accepted Answer

: There has been much internet buzz about hepatitis C virus interfering with HIV testing, but it's rare if it occurs at all. And contrary to popular belief, HCV is not an STI, except in one circumstance:  men having traumatic anal sexual practices with other men. Assuming your partners are male, the chance you were exposed sexually to HCV is nil. All your tests are 100% conclusive:  no worries!

Question 3

what is the accuracy of p24 antigen and antibody hiv testing 4-6 weeks post pep testing? for something incredibly minor, would this be reliable?

Accepted Answer

Prob conclusive, but: This test probably will detect all HIV infections 4-6 weeks after completing PEP. However, it isn't certain. There has been no research on whether and how long a positive test may be delayed if PEP doesn't work. Therefore, most experts recommend a final test at 3 or even 6 months. This is one reason PEP should be done only after a high risk expsoure, because it prolongs uncertainty and anxiety.

Question 4

what is the accuracy of hiv testing (antibody and antigen) 6 weeks post pep? i had all tests (neg) including the pcr rna test at 22 days post pep.

Accepted Answer

HIV testing &amp; RNA: Read the CDC updated recommendations on HIV testing. The rationale for this test being available is that HIV RNA is detectable in plasma before antibodies. A safe approach is to be tested after the eclipse period after potential exposure when no RNA nor antibodies to HIV can be detected.  The RNA test is effective around 10 days after infection but seroconversion to antibodies may take 3 months.

Question 5

hiv testing help & accuracy?! how many days after completing pep is the soonest for an accurate test? 4th gen at 4 weeks or 6 weeks? what about early nat or rna at 10 or 14 days? in meantime, i have not been sexually active. thank you?

Accepted Answer

: RNA test is not recommended because of false positive result. After PEP, 4th generation test at 6 weeks and 4 months is recommended.
Remember your testing objective is to rule out the infection not to confirm the infection after the exposure and taking PEP.

Question 6

i took the same day online std testing | stdcheck.com (http://stdcheck.com) hiv rna test 12 days after exposure. they claim 9599% accuracy at 911 days after exposure, the result was negative. can i be pretty confident with these results?

Accepted Answer

: Pretty confident, yes -- but not 95-99% as the lab claims. More like 90% for an RNA test at 9-11 dys. If it was a truly high risk exposure (e.g. anal sex with another male, vaginal sex with a known infected female), also have an AgAb (4th generation) blood test after a few weeks.

Question 7

what is the accuracy of the hiv 4th gen duo test at 6 weeks post exposure?

Accepted Answer

100%: The duo test is conclusive any time 4 weeks or more after the last exposure to HIV.

Question 8

do i need further hiv testing if i had only one exposure and was before 6 months of test? even if i had symptoms?

Accepted Answer

HIV nucleic acid: If you had a HIV nucleic acid test, six months after exposure, and it was negative, you do not have HIV. The symptoms may be due to some thing else.
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, if you have sex.

Question 9

what are the chances of a positive on a fourth gen hiv duo test @ 6wk after testing negative at 4 wks? some experts use to claim a duo test is conclusive at 4 weeks, yet recently most are saying 6. has guidance changed/ any known 4 wk neg went pos 6?

Accepted Answer

: Typical testing regimen is at 1 month (more than 28 days) and 6 months. If either is positive, you will be offered medications that reduce the viral load in your bloodstream. You should talk to your Dr about using PrEP while you are waiting for results, and even if they come back negative. These prophylactic meds can prevent HIV infection during high risk encounters.

Question 10

what are the rules for testing for hiv?

Accepted Answer

Two tests: Not sure i would call it a "rule", but i would say that:

1. One HIV negative test is never enough.

2. One is not HIV positive until:
    i. Hiv screen is positive, and
    ii. The screen is confirmed by a positive western blot

of course there are a few nuances to this, but you will have to be more specific about your question.

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Doctor answers about:

Hiv testing accuracy at 6 weeks

A member asked:

What is the accuracy of the "non rapid" hiv a/b testing? i had a negative test 1 month ago and no possible exposure in 2 years. thanks!

A member asked:

Does possibly contracting hepatitis affect the results accuracy of hiv combo testing? would be single exposure. last negative for both test was @ 50 days?

A member asked:

What is the accuracy of p24 antigen and antibody hiv testing 4-6 weeks post pep testing? for something incredibly minor, would this be reliable?

A member asked:

What is the accuracy of hiv testing (antibody and antigen) 6 weeks post pep? i had all tests (neg) including the pcr rna test at 22 days post pep.

A member asked:

Hiv testing help & accuracy?! how many days after completing pep is the soonest for an accurate test? 4th gen at 4 weeks or 6 weeks? what about early nat or rna at 10 or 14 days? in meantime, i have not been sexually active. thank you?

A member asked:

I took the same day online std testing | stdcheck.com (http://stdcheck.com) hiv rna test 12 days after exposure. they claim 9599% accuracy at 911 days after exposure, the result was negative. can i be pretty confident with these results?

A member asked:

What is the accuracy of the hiv 4th gen duo test at 6 weeks post exposure?

A member asked:

Do i need further hiv testing if i had only one exposure and was before 6 months of test? even if i had symptoms?

A member asked:

What are the chances of a positive on a fourth gen hiv duo test @ 6wk after testing negative at 4 wks? some experts use to claim a duo test is conclusive at 4 weeks, yet recently most are saying 6. has guidance changed/ any known 4 wk neg went pos 6?

A member asked:

What are the rules for testing for hiv?

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