Yeah a false negative if doing a oral test not a blood test.
Hi!
False negative HIV testing after window period is seen if the test is done within 30 minutes of eating or drinking. It can be negative if you took anti-retroviral therapy for some reason or have low antibody titer or have an immune-compromised state like cancer treatment. If at all you have high ANA, it may cause false positives but is unlikely to cause a false negative. However, please discuss with your doctor. Take care!
The medical advice given should not be considered a substitute for medical care provided by a doctor who can examine you. The advice may not be completely correct for you as the doctor cannot examine you and does not know your complete medical history. Hence this reply to your post should only be considered as a guiding line and you must consult your doctor at the earliest for your medical problem.