Immunological assays are commonly used to screen food products for the presence of anti-microbial drug residues. For the development of antibiotics-specific immunological assays, monoclonal antibodies (mAbs) or polyclonal antibodies (pAbs) against the common structure of the specific class antibiotics are required. In order to obtain antibodies specific for various kinds of β-Lactams antibiotics, Creative Biolabs has made different attempts to develop class-specific haptens for β-Lactams for immunization. With years of experience in antigen design and antibody development, Creative Biolabs provides customized class-specific haptens design, modification as well as synthesis services for β-Lactams antibiotics for our worldwide customers.