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Negative results from 4th generation DUO test after 6 weeks & 10 weeks & 2 days.

Question: 

I am a male, had a protected the vaginal sex with CSW.
But the condom broke , we stopped as soon as we realized.
Not sure how long the exposure was.

This is my only exposure.

I was under tremendous stress & anxiety since then.

I had done the 4th generation DUO test at the lab (in the US at LabCorp) after 6 weeks.

I did another test at the lab (in the US at LabCorp) after 10 weeks & 3 days.

Both the test results came as NonReactive.

Are my results conclusive ?

Should I test again after 12 weeks?
What are the changes of the this result changing from NonReactive between 10th week & 12 week.

thank you.

Answer: 

Hello,

Thank you for your inquiry. From what we gather from the question, you were asking about the conclusiveness of the 4th Generation "duo" tests you received 6 weeks and ~10 weeks following protected vaginal sex. From the information given, this scenario is determined to be Low Risk (evidence of transmission occurs through these activities when certain conditions are met).

The scenario mentioned above could meet the three components of the Transmission Equation since you noticed that the condom broke. You have acted responsibly by accessing HIV testing after a risky exposure. Most HIV specialists agree that the 4th Generation "duo" test is considered conclusive after 6 weeks since the test is able to accurately detect an HIV infection in 99% of people after this period of time (1). Some physicians and guidelines recommend retesting 12 weeks post-exposure for completely conclusive results, in which the test is able to accurately detect an HIV infection in 99.9% of people. With this in mind, the chance that your test results will change from negative to positive between the 10th and 12th week is extremely unlikely.

Recommendation: Refer to a physician for an HIV test 12 weeks post-exposure for completely conclusive results.

Regards,

AIDS Vancouver Helpline/Online, Marie