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