In US: For Research Use Only. Not for Use in Diagnostic Procedures. LA Control Plasma Weak Kit is a set of lyophilized quality control plasmas, weak positive, for use in Lupus Anticoagulant in vitro clotting assays. This kit is optimized for being used with the HEMOCLOT™ LA-S and HEMOCLOT™ LA-C assays (ACK090K-RUO / ACK091K-RUO).