Teak could you please comment on this?.
Thanks for your comment Teak, further
Is that means this odd case because of tested in AIDS patient who is later stage and some type of antibodies could not be detecte ?. Or becuase she had proper Treatment that caused some type antibodies goes to undetectable level that could not picked by these tests. I read some other news saying antibodies tests on AIDS patients some time fail because of above two reasons.
3 and 4 generation ELISA test are very reliable.