The Validate D-Dimer linearity and calibration verification test kit from LGC Maine Standards, Cumberland Foreside, Maine, has received FDA premarket notification (510(k)) clearance for use on Siemens Sysmex CS-2500 system analyzers. The kit, in a human plasma matrix, evaluates D-Dimer and offers five distinct concentrations covering the reportable range for Siemens Sysmex CS-2500 system analyzers. Each kit is liquid and ready-to-use. Users can dispense the product from each dropper bottle directly into five sample cups, and run in replicates. For more information, visit LGC Maine Standards.