WAYNE, Pa.--(BUSINESS WIRE)--Given the role of platelets in both hemorrhagic and thrombotic conditions and the rising significance of antiplatelet therapy in controlling platelet function across a broad spectrum of vascular disorders, establishing clear standardization to guide uniformity among laboratories performing platelet function testing is critical. Clinical and Laboratory Standards Institute (CLSI, formerly NCCLS) recently published a new document, Platelet Function Testing by Aggregometry; Proposed Guideline (H58-P), which provides concrete, standard procedures for using aggregometry to assess platelet function in patient specimens with the intent to achieve greater uniformity of results.