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Conventional coagulation tests (CCT) are inexpensive with minimal labor requirements, but CCTs may have delayed turnaround times. In addition, abnormal CCT values may not reflect in vivo coagulopathies that require treatment and may lead to overtransfusion. The use of viscoelastic testing (VET) has been rapidly expanding and is recommended by several recent bleeding guidelines. This review is intended to compare CCT to VET, review the strengths and weaknesses of both approaches, and evaluate and summarize the clinical studies that compared CCT\u2010based and VET\u2010based transfusion algorithms. Most studies of CCT vs VET transfusion algorithms favor the use of VET in the management of massively bleeding patients due to reductions in blood product utilization, bleeding, costs, and lengths of stay.<\/jats:p>","DOI":"10.1111\/trf.16073","type":"journal-article","created":{"date-parts":[[2020,10,22]],"date-time":"2020-10-22T11:23:40Z","timestamp":1603365820000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":33,"title":["The strengths and weaknesses of viscoelastic testing compared to traditional coagulation testing"],"prefix":"10.1111","volume":"60","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9048-4114","authenticated-orcid":false,"given":"Tobias","family":"Cohen","sequence":"first","affiliation":[{"name":"Department of Pathology and Laboratory Medicine Weill Cornell Medicine  New York New York USA"},{"name":"Department of Transfusion Medicine NewYork\u2010Presbyterian Hospital\u2010Weill Cornell  New York New 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