The lateral flow immunoassay test, also known as immunochromatography assay or rapid point of care test is an extremely versatile and fast method for visual detection of presence or absence of target analyte in a sample. Noble metal nanoparticles like gold can be utilized due to their optical properties with which visual detection by naked eye can be achieved with excellent sensitivity. Lateral flow tests are low cost, simple, rapid, portable, usually show results within 5-20 minutes. Hence these tests are used for as point of care testing in various sectors like biomedicine, agriculture, food and environmental sciences.



