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 The study aimed to estimate the scale of past infections in a population by testing blood serum samples from a pool of people for coronavirus antibodies. Tara John, CNN, "What you need to know about coronavirus on Tuesday, December 29," 29 Dec. 2020 The researchers collected blood samples and serum from more than 2,000 health care workers including 100 people who tested positive through blood serum for the virus. Chronicle Staff,, "Coronavirus news from the Bay Area: Oct. 30-Nov. 5," 6 Nov. 2020 Karger said one reason the U was selected for SeroNet was that its test was not only capable of identifying antibodies, but assessing the amount of them in blood serum. Jeremy Olson, Star Tribune, "University of Minnesota to participate in national coronavirus antibody research," 8 Oct. 2020 Antibody tests are based on blood serum and assess whether people’s immune systems have reacted to the virus, indicating a prior infection. Jeremy Olson, Star Tribune, "Minnesota seeks volunteers for free COVID-19 tests to assess virus spread," 15 Sep. 2020 Theel has run Mayo’s serology (blood serum) lab for eight years, but never experienced such intense public interest, even when her lab pioneered testing for mosquito-borne Zika virus. Star Tribune, "Using science to find solutions," 28 Aug. 2020 Two weeks after receiving a second dose, participants’ levels of binding antibodies — immune substances that bind to the virus — met or exceeded the levels seen in the blood serum of people who had recovered from COVID-19. Mirel Zaman,, "Moderna’s Coronavirus Vaccine Is Looking Promising," 19 May 2020 The portable analyzer, which works with a small microfluidic device, has detected an anti-avian influenza virus antibody in blood serum, according to a statement released by Hokkaido University. Fox News, "New portable technology can detect anti-virus antibody in 20 minutes, researchers say," 21 Apr. 2020 Cochran said that first responders, which included the county’s corrections officers who work inside the jail, received the blood serum tests to detect the coronavirus antibodies. al, "Mobile tests jail guards but not inmates, prompting outcry from civil rights groups," 7 May 2020

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.

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First Known Use of blood serum

1801, in the meaning defined above

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Time Traveler for blood serum

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The first known use of blood serum was in 1801

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Statistics for blood serum

Last Updated

6 Jan 2021

Cite this Entry

“Blood serum.” Dictionary, Merriam-Webster, Accessed 27 Jan. 2021.

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