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Avatar universal

Do I need test?

Dear Doctor,

I have some question. Can you help me? Thank you.
1.When is the best time to take the 20 copies pcr rna virus load test? Is 2 weeks negative result enough to get a conclusive?  Can the load test detect HIV 2? some body said it could only detect HIV1. Does the test have high fale positive result?

2. When can a Roche combi test (antibody and antigen)  get a conclusive result? Is four weeks enough? How long if I want a 100% exclude?

3. I am worried the incident as follows.One weeks ago, I went to a infectious hospital for anual blood drawing test. One person before me left some blood in the table, and the nurse sweeped it with one paper,but not very cleanly. When in my turn , I touched the place with my hand. After finishing my blood draw, about one minute later, I touched the needle wound with the same hand. I am afraied it now. Because many persons come to this hopital for HIV test and Hepatitis Ctest. Are there any risks to get HIV by this way.Do I need any test?

3 Responses
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Avatar universal
Dear Doctor,
Can you provide the reason to me? Why is there no risk?Thank you.
Helpful - 0
Avatar universal
Dear Dr. Jose Gonzalez-Garcia
I am a girl. I received uprotected oral sex from my boy friend with unknown HIV status(he performed on me) and my skin had contingence with his semen.but I probably didnt have obvious cut in my skin. I didnt have vaginal or anal sex at all. 10th day after sex I had negative qualiltative RNA test(RT PCR) for HIV. is this tese conclusive? I am very nervous. please help me
Helpful - 0
1024580 tn?1331574121
Hello,
Thank you for your post.
1.) It has a high level of reliability after 7 days already.  General recommendations advise to take it from 10 days onwards with 99% reliability.  After two weeks, it can be considered conclusive even though current guidelines do not consider it a diagnostic tool and would always recommend a follow-up test after 4 weeks.  In practical terms it can certainly be considered conclusive.  There are RNA test to detect both HIV-1 and HIV-2 depending on the test carried out.  We do offer both.  Incidence of false positives is estimated at less than 2%, but any initially reactive test would have additional confirmatory tests which would indicate if a test was a false positive or not.  In clinical practice, I have to say, we see this happening very rarely.
2.) In Medicine and in Biology, you would never have 100%.  However any test beyond 99.9% is considered conclusive.  A negative Duo or Combi test is conclusive after 4 weeks.
3.) No risk of HIV infection at all whatsoever.  No need to be tested either.
Best wishes,
Dr José
Helpful - 0

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