Anonymous
Hello there.

I was wondering if suffering from ulcerative colitis/Crohns disease and taking Asacol (mesalazine) can delay seroconversion and consequently affect the accuracy of an hiv test result which was taken at 7 weeks and 8 weeks (4th generation).

Many thanks

James
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Anonymous
Hello and thank you for contacting the AIDS Vancouver Helpline.

We are happy to help answer your questions. Previously, there were several errors written on our website, which identified Crohn's Disease as an immunodeficiency disease, instead of an auto-immune disease. We now know that Crohn's Disease is an auto-immune disease, and therefore, it does not affect the window period of an HIV test.

The 4th Generation EIA test is considered conclusive by many HIV specialists at 6 weeks post-exposure, but we still follow BC CDC guidelines that suggest re-testing at 3 months post-exposure is the safest option. Since your condition and the medication you take for it is not known to affect the window period of an HIV test, you may consider the results of your HIV test at 7 and 8 weeks post-exposure a strong indication of your status.

There are only 4 situations that may affect the window period of your HIV test and they are:

Antiviral treatment for Hepatitis C (HCV)

Treatment for Cancer (Chemotherapy)

P.E.P. treatment for HIV.

Other Immunodeficiency Disorders (such as DiGeorge Syndrome)


We hope this helps clarify what situations can and cannot affect the window period of an HIV test. Thank you for contacting the AIDS Vancouver Helpline.

Sincerely,

Marta

AIDS Vancouver Volunteer

[AIDS Vancouver Online Helpline](www.helpline.aidsvancouver.org)


Monday to Friday 10AM to 4PM (PST)


604-253-0566 ext 299.


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