The assay, called the Guava SARS-CoV-2 Multi-Antigen Antibody Assay, could provide scientists with a more complete picture of the immune response to SARS-CoV-2. Kamala Tyagarajan, Director of Flow ...

“The conventional method for detecting small-molecule antigens such as steroid hormones is based on competition assays, where the antigen competes with a reagent molecule for limited sites on a ...

Antigens are widely used in diagnostic assays to detect the presence of specific pathogens, biomarkers, or antibodies in patient samples. Examples include enzyme-linked immunosorbent assays (ELISA), ...

Detection of IgM antibody or p24 antigen is unsuitable for HIV incidence testing. None of the available incidence assays have yet delivered robust incidence estimates that can be compared from ...

More information: Richard Willson et al, Development of a rapid antigen-based lateral flow assay for tick-borne spotted fever ...

High levels of p24 are present in the blood serum of newly infected individuals during the short period between infection and seroconversion, making p24 antigen assays useful in diagnosing primary HIV ...

Assays for hepatitis B surface antigen (HBsAg) are the most frequently used tests to detect HBV infection. Vaccination for HBV can produce transiently detectable levels of HBsAg in patients.