What are the possible side effects of amphetamine and dextroamphetamine (Adderall, Adderall XR)? Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
If your body detects EBV, it can develop a type of antibody called heterophile antibodies. If you have heterophile antibodies in your blood, then your monospot test is positive.. A positive monospot test accompanied by the symptoms of mono results in a diagnosis of infectious mononucleosis. However, monospot tests can be false-positive, about 10-15% of the time, particularly in early stages of the illness. You may also receive a negative monospot test even if you have mono.
1 This may lead to a false-negative result. 2  If the first test does not indicate mono but you still have symptoms, the test may be repeated. 3  Other infection or disease, such as cytomegalovirus (CMV), leukemia or lymphoma, rubella, hepatitis, or lupus.easons you may not be able to have the test or why the results may not be helpful include: 1  Having an EBV antibody test within the first few weeks of becoming infected with EBV. 2  This may lead to a false-negative result.