The VacciGel? ELISA for Diphtheria Toxoid (DTX) is the first commercial test to measure the active component of DTX vaccines formulated in Adjuphos (Alum gel). It is a simple, rapid, and sensitive test and required no extraction or harsh dissociation of the antigens from the gel (Alum). This kit has been validated with Daptacel (DTAP, Diphtheria and Tetanus Toxoids and Acellular Pertussis Vaccine Adsorbe, Sanofi). This kit can be used to measure DTX in monovalent of multivalent vaccines adsorbed on Alum (Trihibit (DTAP/Hib), ActHib (Hib-PRP-T), Trihibit (DTAP/Hib), Daptacel (DTAP), Tripedia (DTAP), Td (Adult), DecavacTM (tetanus/Diphtheria), Adacel (tetanus, Diphtheria, Acellular Pertussis), DT (Pediatric) - Sanofi Pasteur; Pediarix (DTAP/HepB/IPV), Infanrix (DTAP), Boostrix (Tetanus, Diphtheria, Acellular Pertussis)- GlaxoSmithKline).