Cayman's sPLA2 ELISA Kit is an immunometric (i.e. sandwich) assay that can be used for the quantification of sPLA2 in plasma, synovial fluid, and other sample matrices. Each kit contains AChE:sPLA2 antibody conjugate, antiserum, human recombinant sPLA2 standard, Ellman's reagent, ELISA buffer, wash buffer, Polysorbate 20, plates pre-coated with sPLA2 capture antibody, and complete instructions.