Judged: two independent readers; copy check clear.
LFA
LFA LFA, or lateral flow assay, is a laboratory test method in which a sample moves along a test strip by capillary action and meets substances that react specifically with a target analyte.
LFA, or lateral flow assay, is a laboratory test method in which a sample moves along a test strip by capillary action and meets substances that react specifically with a target analyte. It is used to show within minutes whether the analyte is present or absent, and in some cases to give an approximate or measured level.