The EBV IgG Antibodies to Early Antigen Test is a blood test that measures the presence of antibodies to a protein produced by the Epstein-Barr virus (EBV) during its early stage of infection
Varicella Zoster IgG Antibodies is a blood test that measures the level of antibodies produced by the body in response to the varicella zoster virus, which causes chickenpox and shingles
The Intrinsic Factor Antibody (IFA) test is a blood test that measures the presence of antibodies against intrinsic factor, a protein produced by parietal cells in the stomach that is necessary for the absorption of vitamin B12
The Cryptococcus antigen test is a laboratory test that checks for the presence of Cryptococcus neoformans in a patients blood, cerebrospinal fluid, or other bodily fluids