The Science behind the First Check® Drug Test
First Check® Tests use advanced and proven
technology to ensure the most accurate results possible. First
Check’s patented home drug test kits use Thin Layer Chromatography
(TLC) technology to produce visible, accurate results within
Here you will find all the information you need about how to take a
First Check® Home Drug Test and how the test works.
First Check is dedicated to providing you with detailed answers to
your questions, offering tips on taking a test, explaining the
technology behind the tests, and sharing the ways people have
evaded detection of drug use in the past.