9. Meaning of assay. What is Assay . The factor V (five) assay is a blood test to measure the activity of factor V. This is one of the proteins in the body that helps the blood clot. Some of the methods used in qualitative analysis include extraction, distillation, precipitation and other methods that determine physical and chemical properties. 2. home/medterms medical dictionary a-z list / assay definition. © 2012 Farlex, Inc. All Rights Reserved. Define Assay by Webster's Dictionary, WordNet Lexical Database, Dictionary of Computing, Legal Dictionary, Medical Dictionary, Dream Dictionary. Assay: An assay is an analysis done to determine: The presence of a substance and the amount of that substance. Information and translations of assay in the most comprehensive dictionary definitions resource on the web. to analyze (an ore, alloy, etc.) A April 2020 6. A colored product is formed if the viral antigen is present in the sample (4). The biological or pharmacological potency of a drug. 8. To try or attempt. Looking for definition of Assay? In other words, a test to determine something about a substance. Assay is a procedure for the examination or determination of quality or strength of a substance. Both words come from the French "essai" which in turn came from the Late Latin "exagium" meaning the "act of weighing". Pharmacology. Was this definition helpful? You are here: Home / Medical Terms / A / assay. 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Terms of Use. https://medical-dictionary.thefreedictionary.com/assay. 7. An assay is an investigative (analytic) procedure in laboratory medicine, pharmacology, environmental biology and molecular biology for qualitatively assessing or quantitatively measuring the presence, amount, or functional activity of a target entity (the analyte). determination of the purity of a substance or the amount of any particular constituent of a mixture. This is one of the proteins in the body that helps the blood clot. For example, an assay may be done of a vaccine to determine its potency. © 2002 by The McGraw-Hill Companies, Inc. A chemical examination of metals, by which the quantity of valuable or precious metal contained in any mineral or metallic mixture is ascertained. An analysis of the chemical composition or strength of a substance. Thus, an assay may be done for example to determine the level of thyroid hormones in the blood of a person suspected of being hypothyroid (or hyperthyroid). A chemical examination of metals, by which the quantity of valuable or precious metal contained in any mineral or metallic mixture is ascertained. ELISA: With antigen capture ELISA, the wells are coated with antibody to the virus. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. The presence of a substance and the amount of that substance. MedicineNet does not provide medical advice, diagnosis or treatment. assay definition: 1. to perform an examination on a chemical in order to test how pure it is 2. to perform an…. From Hart and Shears, 1997. What does assay mean? (Optional) After an assay has … An assay procedure is generally employed to evaluate an intensive property of the measured entity, called "analyte". We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. assay - a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or … However, "assay" and "essay" share a common ancestry. The factor VIII assay is a blood test to measure the activity of factor VIII. Delete the temporary folder you created on the desktop. Assay. This is often carried out on a microscope slide where the cell m… It is usually... | Meaning, pronunciation, translations and examples Definition and synonyms of assay from the online English dictionary from Macmillan Education.. The sample containing virus (1) is added and, after washing several times, enzyme conjugated to an antibody to the virus is added (2). An attempt; an essay. For example, an assay may be done of a vaccine to determine its potency. Assaulting a police officer, counterclaims. Definition of assay in the Definitions.net dictionary. Finally, after a further cycle of washing, the enzyme's substrate (3) is added. In the Comet Assay process, cell damage is determined by employing the theory that when a charge is applied to a cell, the amount of DNA that leaves the nucleus is an indication of the amount of DNA damage. A laboratory test to find and measure the amount of a specific substance. Assay: An assay is an analysis done to determine: Assay is also used as a verb and has several related meanings in this role: The words "assay" and "essay" are often confounded, a cardinal sin according to some word mavens. After the assay definition file has been imported correctly, close the GeneXpert Dx software. The biological or pharmacological potency of a drug. Full Definitions of assay 1 n a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc. The term is often used in the mining industry to refer to tests of ore or minerals. Definition of ASSAY (noun): chemical test of a substance. In terms of drug testing, a type of assay known as an immunoassay is performed to detect the presence of drug metabolites in urine. Assay Validation: Comprehensive experiments that evaluate and document the quantitative performance of an assay, including sensitivity, specificity, accuracy, precision, detection limit, range and limits of quantitation. All Free. Thus, an assay may be done for example to determine the level of thyroid hormones in the blood of a person suspected of being hypothyroid (or hyperthyroid). The measured entity is often called the analyte, the measurand, or the target of the assay. This is the British English definition of assay.View American English definition of assay.. Change your default dictionary to American English. Enzyme-linked immunosorbent assay ( ELISA ): ELISA stands for "enzyme-linked immunosorbent assay." An assay usually aims to measure an analyte's intensive propertyand express it … The analyte can be a drug, biochemical substance, or cell in an organism or organic sample. See additional information. To judge the value, the worth of something. to examine or analyze: to assay a situation; to assay an event. 10. to subject (a drug) … Check the assay name and version number to make sure the correct assay definition has been imported. (noun) A quantitative determination of the amount of a given substance in a particular sample. Listed under: Cancer Dictionary; Find More About 'assay' 8. Definition of assay noun in Oxford Advanced American Dictionary. McGraw-Hill Concise Dictionary of Modern Medicine. (Entry 1 of 2) 1 : examination and determination as to characteristics (as weight, measure, or quality) 2 : analysis (as of a drug) to determine the presence, absence, or quantity of one or more components — compare bioassay. assay définition, signification, ce qu'est assay: 1. to perform an examination on a chemical in order to test how pure it is 2. to perform an…. 6 Importing Assay Definition File 302-4026, Rev. This is a rapid immunochemical test that involves an enzyme (a protein that catalyzes a biochemical reaction). assay - a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc. ©1996-2020 MedicineNet, Inc. All rights reserved. 9. It is the analysis of the amount of metal in an ore, or the determination of the amount of purities in a precious metal. Medical definition of radioreceptor assay: an assay for a substance and especially a hormone in which a mixture of the test sample and a known amount of the radiolabeled substance under test is exposed to a measured quantity of receptors for the substance and the amount in the test sample is determined from the proportion of receptors occupied by radiolabeled molecules of the substance under the … This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. assay. biopsy - examination of tissues or liquids from the living body to … 2. in order to determine the quantity of gold, silver, or other metal in it. Assay explanation. After the assay definition file has been imported correctly, delete the temporary folder you created on the desktop. ", To analyze a mixture for one or more of its components. assay - WordReference English dictionary, questions, discussion and forums. Learn more. For example, "she assayed this operation for the first time and so was understandably nervous. Full Assay Validation will include inter-assay and inter-laboratory assessment of assay repeatability and robustness. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Farlex Financial Dictionary. This is important to commodities and futures involving precious metals, in which the quality of the underlying metals must be specified in the contract. In the process, the single cells under investigation are placed in low melting point agarose which is a gel-like polysaccharide derived from seaweed. It also involves an antibody or antigen (immunologic molecules). Check the assay name and version number to make sure the correct assay definition has been imported. An assay is a process of analyzing a substance to determine its composition or quality. The enzyme-linked immunosorbent assay (ELISA) (/ ɪˈlaɪzə /, / ˌiːˈlaɪzə /) is a commonly used analytical biochemistry assay, first described by Engvall and Perlmann in 1971. An assay, in medical testing, is a test done to detect the presence, amount, or potency of a substance found in a sample. Assay is also used as a verb and has several related meanings in this role: To try or attempt. assay Definition / meaning of assay. Metallurgy. Lab medicine The quantification of a substance of interest by a specific chemical, enzymatic, immunologic or radioimmune-mediated reaction. Assay definition: An assay is a test of a substance to find out what chemicals it contains. A chemical assay, as studied under the branch of chemistry called analytical chemistry, is divided into qualitative (identity) analysis and quantitative (amount of substance) analysis. To test precious metals for their purity. Medical Definition of assay. The biological or pharmacological potency of a drug. Bookmark, Share & Be Social. Of its components it is usually... | Meaning, pronunciation, translations and examples you here. It also involves an antibody or antigen ( immunologic molecules ), discussion and forums organism. Substance or the target of the methods used in qualitative analysis include extraction, distillation, precipitation and reference... To judge the value, the worth of something `` assay '' and essay. What chemicals it contains the proteins in the process, the measurand, or other metal in it of,... On our website, including to provide targeted advertising and track usage an assay be. 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