blood serum


Definition of blood serum 

: the clear yellowish fluid that remains from blood plasma after clotting factors (such as fibrinogen and prothrombin) have been removed by clot formation

Examples of blood serum in a Sentence

Recent Examples on the Web

Researchers checked blood serum for the main form of vitamin D in blood. Bradley J. Fikes,, "Vitamin D associated with lower risk of breast cancer, UCSD-led study finds," 15 June 2018 Of the 214 players examined, 126, or 59 percent, were found to have an abnormally low vitamin D level, as measured in blood serum. Bradley J. Fikes,, "Low vitamin D, muscle injuries linked in NFL prospects," 21 Dec. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'blood serum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of blood serum

1801, in the meaning defined above

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The first known use of blood serum was in 1801

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More Definitions for blood serum

blood serum


Medical Definition of blood serum 

More from Merriam-Webster on blood serum

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exaggeratedly or childishly emotional

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