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pubmed-article:1507476pubmed:dateCreated1992-9-22lld:pubmed
pubmed-article:1507476pubmed:abstractTextPlatelet function tests have been utilized for a long time as a useful tool for the diagnosis of qualitative platelet disorders. However, recently reports suggest that platelet function tests currently available in routine laboratory do not necessarily reflect in vivo hemostatic states. First of all, bleeding time could sometimes be non-informative for the following reasons; 1) Duke method, the most popular method in Japan, has poor reproducibility, 2) there is no appropriate method for monitoring of aspirin ingestion, 3) prolongation of bleeding time does not correlate with the amount of blood loss during surgery. Platelet adhesion is still measured by the ability of platelets to be retained on glass beads. However, this test is unable to detect selectively platelet adhesion. Thus, the test in which platelets can exclusively adhere to subendothelial components such as collagen, may be required. Platelet aggregation has been mostly analyzed by the changes in light transmittance in platelet rich plasma (PRP) with a platelet aggregometer. However, this test totally depends on the platelet count in PRP or duration of time after taking blood from patients. Moreover, platelet aggregation in this system is optimally observed and is hardly detectable when the in vivo Ca++ concentration has been chelated. Furthermore, the test could not detect small platelet aggregates, thus being unable to measure the early phase of platelet aggregation. These observations suggest that more simple and specific tests should be developed and become available in routine laboratory.lld:pubmed
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pubmed-article:1507476pubmed:statusMEDLINElld:pubmed
pubmed-article:1507476pubmed:monthMaylld:pubmed
pubmed-article:1507476pubmed:issn0047-1860lld:pubmed
pubmed-article:1507476pubmed:authorpubmed-author:WatanabeKKlld:pubmed
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pubmed-article:1507476pubmed:volume40lld:pubmed
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pubmed-article:1507476pubmed:pagination507-14lld:pubmed
pubmed-article:1507476pubmed:dateRevised2006-11-15lld:pubmed
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pubmed-article:1507476pubmed:year1992lld:pubmed
pubmed-article:1507476pubmed:articleTitle[Current status and problems of platelet function tests].lld:pubmed
pubmed-article:1507476pubmed:affiliationDepartment of Laboratory Medicine, School of Medicine, Keio University, Tokyo.lld:pubmed
pubmed-article:1507476pubmed:publicationTypeJournal Articlelld:pubmed
pubmed-article:1507476pubmed:publicationTypeEnglish Abstractlld:pubmed