The Confirmatory Reagent contains the drug Infliximab (Remicade®, Remsima®, and Inflectra®) lyophilized. The reconstituted Confirmatory Reagent is designed for use as a competition/inhibition test for the confirmation of samples which have been ADA positive in the initial screening test coded TM09003. Used as a complementary component for Immunoguide® Anti-Infliximab (Remicade®, Remsima®, and Inflectra®) (ATI), catalog #TM09003 ELISA.