Lateral Flow Assays

Lateral Flow Assays (LFAs) are simple diagnostic tests that detect the presence of specific substances, like viruses or bacteria, in a sample such as blood or saliva. The sample is applied to one end of a test strip, which contains chemicals that bind to the target if present. As the sample flows along the strip, it encounters these reagents, leading to a visible line or symbol if the substance is detected. This quick and user-friendly method is commonly used in at-home tests and clinics for rapid screening and diagnosis.