The first edition of this manual appeared in 1992 and was entitled ECAT Assay Procedures. It was the result of a unique cooperation between experts brought together by the European Concerted Action on Thrombosis and Disabilities (ECAT). The Concerted Action was at that time under the auspices of the Commission of the European Union. The second edition, like the first edition, deals with diagnostic tests within the field of thrombosis. However, the second edition has a broader scope because it is no longer limited by the frontiers of ECAT. Experts allover the world, in and outside ECAT, have...