Yes, she would have tested positive with 4th generation testing.
If the woman was tested with a combo she would have at least been antigen positive right?
This is NOT a case of delayed seroconversion. The patient never tested positive on an ELISA and it clearly mentions seroreversion as a possibility. Seroreversion is extremely rare and only occurs in patients who have been infected with HIV for several years and have developed AIDS.
Only if your a chemotherapy patient,a transplant patient on meds or a chronic iv drug user,if not, delayed seroconversion won,t happen.