buffy coat

noun

Biochemistry.

1. a yellowish-white layer consisting of leukocytes that, upon centrifugation of blood, covers the red blood cells.

Word History and Origins

Origin of buffy coat¹

First recorded in 1790–1800

Example Sentences

In 1811, Arnell stated that "the blood drawn in the early stage appeared like that of a person in full health; there was no unusual buffy coat, neither was the crassamentum broken down or destroyed."

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Tourdes, whose analyses follow, states that "blood drawn from a vein was rarely buffed; if a buffy coat existed, it was thin, and generally a mere iridization upon the surface of the clot."

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When blood has been drawn from an animal, and it assumes a cupped or hollow form, if serum, or buffy coat, remains on its surface, it denotes an impoverished state; but if the whole, when coagulated, be of one uniform mass, it indicates a healthy state of that fluid.

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In some cases where blood was drawn at the commencement of the disease from the arm, and from patients who were extremely furious and ungovernable, it was covered with a buffy coat; but in other cases it has seldom or never such an appearance.

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In the few cases where blood was drawn at the commencement of the disease from the arm, and from patients who were extremely furious and ungovernable, it was covered with a buffy coat; but in other cases it has seldom or never such an appearance.

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