Rapid Strep A test

Colour change controls in the reagent mixing stage provide reassurance that the reagents have been mixed correctly. Once the extract has been applied to the test there is no need for a clock, the in-built end of assay control shows when the test is complete.

The positive on-board control gives an extra measure of quality control by demonstrating test functionality, since it will only appear if the reagents are chemically active. The negative on-board control is a marker to indicate false positive results. It indicates a non-specific binding entity in the specimen.