Check first, with First Check


First Check Diagnostics Corp. provides you with the accurate answers you are looking for to those difficult questions in the privacy of your own home. It is First Check’s goal to give you the information you need, when you need it.
We offer a full portfolio of products ranging from a marijuana home drug test to a test for prescription drug use. First Check even tests to answer your health-related questions, providing accurate tests for both cholesterol levels and colon disease.
First Check is committed to leading the market in both home testing for drug use and home testing for other health concerns. We will continue to provide you with accurate, innovative products that you can use at home.
  • For more information about the First Check product line, please explore:
    First Check website
  • For questions about our products, please call us at 1-888-788-5716.
  • Our professional staff is available to assist you and all calls are confidential.