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Preparation of Platelet Poor Plasma for Special Coagulation Testing



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Hematocrit

Slide 6

October 2008

An acceptable hematocrit will be between 25-55%; for hematocrits less than 25% the plasma calcium is in an excess proportion to sodium citrate anticoagulant. The plasma will be prone to clots and plotting time results will be falsely low.

For hematocrits greater than 55%, the sodium citrate anticoagulant is in excess proportion to plasma calcium. The plasma will produce falsely-prolonged clotting times.

Hematocrit

 


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