Please enable JavaScript.
Coggle requires JavaScript to display documents.
MED VIROLOGY 2, pt.2 - Coggle Diagram
MED VIROLOGY 2, pt.2
RAPID TESTS DEVICE
Pt's patients finger pricked>drop of blood on filter strip>blood drawn into paper>travels to a spot on the paper with HIV antigens>if pt. has antibodies>>Antigen+antibodies>>colour develops @ spot>
-
-
Pros>>Convenient, no delay, cheaper, easy to confirm pt. identity
Cons>>Not sensitive, false negatives in pts on long term ARvs , false +ves, require training,
-
-
-
PCR/Viral load
-
Tests free virus and plasma & look for viral RNA(Used to measure viral load)>determine the pt's response to ARVs
-
Highly sensitive , 1st markers, expensive & not used for diagnosis in adults
-
-
TYPES OF TESTS
Rely on Virus>>P24 antigen assay, PCR and viral load.
Rely on antibodies>>ELISA, Rapid Test & Western Blot test