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 Our group is currently working on using blood serum to identify proteins that could be involved with breast cancer. Danielle Whitham, Discover Magazine, 22 Mar. 2024 Chang and his coauthors also analyzed samples of blood serum from humans with lupus, dermatomyositis and systemic sclerosis and compared them with samples from people without autoimmune disease. Katie Hunt, CNN, 9 Feb. 2024 For flu, monitoring antigenic drift involves conducting a slew of blood serum tests in the lab and looking for patterns in the data. IEEE Spectrum, 1 Feb. 2022 Mayo is collecting blood serum samples stored at blood banks from another 2,000 to 3,000 patients who received convalescent plasma to expand its recent findings that high-dose plasma infusions had a greater impact on COVID-19 mortality than low-dose infusions. Jeremy Olson, Star Tribune, 20 Aug. 2020 The results, described in a 2011 paper in Nature, showed that the young mice treated with blood serum from old mice performed worse on tests of learning and memory. Dan Hurley, Discover Magazine, 9 June 2023 Without sound evidence linking skin exposure from clothing to upticks in PFAS in blood serum levels, Calonge said, for now, decisions are largely left up to risk tolerance. Hannah Norman, CBS News, 30 Mar. 2023 When researchers at Stanford University grew human neurons in a dish and treated them with blood serum from young mice, the neurons formed more synapses, which transmit electrical and chemical signals between cells, as well as more dendritic branches, which pick up messages from other neurons. Elizabeth Svoboda, Discover Magazine, 27 May 2022 Compared to the original version of the coronavirus, lab tests that pitted omicron against the blood serum of people who’d had two doses of the vaccine detected a 25-fold reduction in neutralizing antibodies, the immune proteins that thwart the virus. oregonlive, 9 Dec. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'blood serum.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1801, in the meaning defined above

Time Traveler
The first known use of blood serum was in 1801

Dictionary Entries Near blood serum

Cite this Entry

“Blood serum.” Dictionary, Merriam-Webster, Accessed 19 May. 2024.

Kids Definition

blood serum

: blood plasma from which certain substances (as fibrinogen) involved in the clotting of blood have been removed

Medical Definition

blood serum


More from Merriam-Webster on blood serum

Last Updated: - Updated example sentences
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