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 minutes.

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.

How Tests Work

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 minutes.

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 minutes.