In direct ELISAs, less than 5% cross-reactivity with recombinant human (rh) ADAMTS4 and rhADAMTS15 is observed and less than 1% cross-reactivity with rhADAMTSL1.2, rhADAMTSL2, rhADAMTS5, rhADAMTS8, rhADAMTS10, rhADAMTS12, rhADAMTS13, and rhADAMTS16 is ob