What Does LFA Mean in Medical Terms?

LFA stands for lateral flow assay. Strip test format, as in rapid antigen tests.

lateral flow assay

Strip test format, as in rapid antigen tests.

Where you will see LFA

You will most often see LFA in laboratory orders and test results, medical charts and clinical notes.

Example

A laboratory request or report might list “LFA” as shorthand for lateral flow assay.

Related abbreviations

Browse the full Medical Abbreviations guide — 5,715 entries, searchable A–Z and by specialty.

Educational reference only. This guide is for learning and quick reference. Abbreviations vary between hospitals, countries and specialties, and some are discouraged because they can be misread. Always write and interpret orders using your own institution’s approved abbreviation list, and check anything unclear with the prescriber or your local policy.