In sandwich ELISAs, less than 0.3% cross-reactivity with recombinant human (rh) Syndecan-2, rhSyndecan-3, rhSyndecan-4, and recombinant mouse Syndecan-1 is observed. Reconstitute at 0.2 mg/mL in sterile PBS. CD138 (syndecan 1) is a transmembrane proteogl