Medical Questions > Conditions and Diseases > HIV and AIDS Forum

chances hiv negative at 90 days become positive?

User Profile
what are the chances of a hiv negative person at 90 days become positive at 6 month? for a low rish exposure does that ever happen ? i am aware of the late seroconverters with predisposing medical conditions take longer time to seroconvert apart from such people ,do normal people need to be worried of such a senario ??

Did you find this post helpful?

User Profile
replied May 5th, 2011
HIV and AIDS Answer A22648
Hello and welcome to E health forum.

HIV antibody tests in a normal individuals - should be done atleast after 4-12 weeks of exposure. (Antibodies to HIV are produced by 4 weeks in 90% individuals who had a infective exposure and a positive test result). The test result at the end of 12 weeks can be considered conclusive. (This is to clear any remaining doubts).

It is extremely rare for a NORMAL person to take any longer then 6 months to develop detectable antibodies.

Conditions that result in late production of antibodies are rare genetic diseases - and do present much earlier in life and individuals will always be sick with respiratory and diarrheal infections throughout their life.

Such disorders include :

1. Disorders of antibody production: Hypogammaglobulinemia ; X-linked agammaglobulinemia ; IgA deficiency ; IgG deficiency ; IgM deficiency ; Hyper IgM syndrome ; Wiskott-Aldrich syndrome • Hyper-IgE syndrome

2. Common variable immunodeficiency

3. Cell-mediated (T) : Di George's syndrome ; Purine nucleoside phosphorylase deficiency
Severe combined (B+T) x-linked: X-SCID ; Adenosine deaminase deficiency

4. Conditions resulting in : Leukopenia, Lymphocytopenia , Idiopathic CD4+ lymphocytopenia

5. Complement deficiency

It is in such individuals, that testing after 12 weeks or after 6 months is advised.

I hope this helps.

Did you find this post helpful?
Must Read
Do you know what causes HIV? Get started by learning the facts on HIV and AIDS here....
Do you know what puts you at high risk of HIV? Debunk the myths and get the facts of HIV risk factors here....
Can you identify early HIV symptoms. Learn what to look for and when to seek medical help as we review symptoms of HIV here....
DISCLAIMER: "Ask a Doctor" questions are answered by certified physicians and other medical professionals. For more information about experts participating in the "Ask a Doctor" Network, please visit our medical experts page. You may also visit our HIV and AIDS , for moderated patient to patient support and information.

The information provided on eHealth Forum is designed to improve, not replace, the relationship between a patient and his/her own physician. Personal consultation(s) with a qualified medical professional is the proper means for diagnosing any medical condition.