There are a range of lateral flow assays (LFAs) designed for diagnostic applications at home (over-the-counter, OTC) and point-of-care (PoC).
These are simple to use and can test for several biomarkers in various matrices, including saliva, nasal swabs, blood and urine.

This presentation by Fortis Life Sciences’ Andre Alfaro outlines the methods and means of developing saliva-based LFAs for testing for various therapy areas.