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Preanalytic Variables in Special Coagulation Testing

Clinical Implications


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Causes of Clotted Specimen

Slide 24

October 2008

We attempted to determine potential patient variables that may influence clotted specimens, so we looked at the type of test that were ordered on the specimens that were found to be clotted. As an example, we tried to determine the type of test ordered, by that I mean we looked into whether these clotted samples had thrombosis profiles or components; or bleeding profiles or components ordered. We found no trend toward one type of order or another, making individual patient variables less likely.

It is well-established that optimal sample collection and processing is key to avoiding clotted specimens, however; this would be a daunting study to do given the numerous client laboratories and technologists involved.

Causes of Clotted Specimen


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