It is usually... | Meaning, pronunciation, translations and examples Definition of assay in the Definitions.net dictionary. The measured entity is often called the analyte, the measurand, or the target of the assay. 7. Listed under: Cancer Dictionary; Find More About 'assay' 8. To judge the value, the worth of something. Bookmark, Share & Be Social. For example, an assay may be done of a vaccine to determine its potency. An attempt; an essay. 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. In terms of drug testing, a type of assay known as an immunoassay is performed to detect the presence of drug metabolites in urine. Delete the temporary folder you created on the desktop. Farlex Financial Dictionary. See additional information. In other words, a test to determine something about a substance. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. (noun) A quantitative determination of the amount of a given substance in a particular sample. to examine or analyze: to assay a situation; to assay an event. Assay explanation. 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. Metallurgy. Assay is a procedure for the examination or determination of quality or strength of a substance. 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…. The biological or pharmacological potency of a drug. The enzyme-linked immunosorbent assay (ELISA) (/ ɪˈlaɪzə /, / ˌiːˈlaɪzə /) is a commonly used analytical biochemistry assay, first described by Engvall and Perlmann in 1971. McGraw-Hill Concise Dictionary of Modern Medicine. This is the British English definition of assay.View American English definition of assay.. Change your default dictionary to American English. (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. The term is often used in the mining industry to refer to tests of ore or minerals. An assay is a process of analyzing a substance to determine its composition or quality. Lab medicine The quantification of a substance of interest by a specific chemical, enzymatic, immunologic or radioimmune-mediated reaction. Information and translations of assay in the most comprehensive dictionary definitions resource on the web. 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. Definition of assay noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 10. 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). 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 … After the assay definition file has been imported correctly, close the GeneXpert Dx software. This is one of the proteins in the body that helps the blood clot. On the basis on the end users/applications, this report focuses on the status and outlook for major applications/end users, sales volume, market share and growth rate of Plant Physiology, Specifically, the Panther Fusion module adds the capacity to run PCR (polymerase chain reaction), It states: "This consultation seeks to understand whether stakeholders would wish articles of precious metals which are hallmarked by UK, After a subsequent wash step, the beads were resuspended in 100 [micro]L, An aliquot of the specimen from the freezer was subsequently sent to a reference laboratory (Trihealth Laboratories; Cincinnati, Ohio) for the tissue cell culture cytotoxin, These 19 papers describe and evaluate a range of, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Plant Physiology Assay Kit Market 2019-2023; Industry Analysis, Company Profiles, Key Trends, Current Size and Forecast Report By Radiant Insights, Inc, Hologic Inc passes US FDA's 510(k) clearance for Panther Fusion Paraflu assay for Parainfluenza viruses 1, 2, 3 and 4, FDA Grants 510(k) Clearance to Hologic for Paraflu Assay, Public views sought over Assay Office's hallmark use abroad, Development of a BNP1-32 Immunoassay That Does Not Cross-React with proBNP, Now Available: Global Multiple Reaction Monitoring Assay Market Forecast and Growth 2016-2026, Revised device labeling for the Cepheid Xpert MTB/RIF assay for detecting Mycobacterium tuberculosis, Isoniazid and rifampin drug susceptibility testing: application of 2,3,5-triphenyl tetrazolium chloride assay and microscopic-observation drug-susceptibility assay directly on Ziehl-Neelsen smear positive sputum specimens, Monitoring potency assays: the need to track key indicators when performing a potency assay to determine whether the assay is accurate, or indicative of a biological component going bad, Comparison of the Siemens vWF:RCo and the instrumentation laboratory HaemosIL von Willebrand factor activity assays for the diagnosis of von Willebrand disease, Comparing ImmunoCard with two EIA assays for Clostridium difficile toxins, Angiogenesis assays; a critical appraisal of current techniques. A colored product is formed if the viral antigen is present in the sample (4). assay. 2. This is often carried out on a microscope slide where the cell m… Assaulting a police officer, counterclaims. We use cookies to enhance your experience on our website, including to provide targeted advertising and track usage. Definition of ASSAY (noun): chemical test of a substance. Full Assay Validation will include inter-assay and inter-laboratory assessment of assay repeatability and robustness. Some of the methods used in qualitative analysis include extraction, distillation, precipitation and other methods that determine physical and chemical properties. To test precious metals for their purity. 8. © 2002 by The McGraw-Hill Companies, Inc. assay Definition / meaning of assay. 6 Importing Assay Definition File 302-4026, Rev. Looking for definition of Assay? 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. 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. Define Assay by Webster's Dictionary, WordNet Lexical Database, Dictionary of Computing, Legal Dictionary, Medical Dictionary, Dream 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. This is a rapid immunochemical test that involves an enzyme (a protein that catalyzes a biochemical reaction). All Free. However, "assay" and "essay" share a common ancestry. https://medical-dictionary.thefreedictionary.com/assay. to subject (a drug) … What is Assay . ©1996-2020 MedicineNet, Inc. All rights reserved. A April 2020 6. It also involves an antibody or antigen (immunologic molecules). Finally, after a further cycle of washing, the enzyme's substrate (3) is added. It is the analysis of the amount of metal in an ore, or the determination of the amount of purities in a precious metal. © 2012 Farlex, Inc. All Rights Reserved. Enzyme-linked immunosorbent assay ( ELISA ): ELISA stands for "enzyme-linked immunosorbent assay." Assay. Assay: An assay is an analysis done to determine: The presence of a substance and the amount of that substance. A chemical examination of metals, by which the quantity of valuable or precious metal contained in any mineral or metallic mixture is ascertained. Pharmacology. The sample containing virus (1) is added and, after washing several times, enzyme conjugated to an antibody to the virus is added (2). ", To analyze a mixture for one or more of its components. For example, "she assayed this operation for the first time and so was understandably nervous. 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. After the assay definition file has been imported correctly, delete the temporary folder you created on the desktop. The presence of a substance and the amount of that substance. Definition and synonyms of assay from the online English dictionary from Macmillan Education.. An assay, in medical testing, is a test done to detect the presence, amount, or potency of a substance found in a sample. 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. Check the assay name and version number to make sure the correct assay definition has been imported. determination of the purity of a substance or the amount of any particular constituent of a mixture. assay definition: 1. to perform an examination on a chemical in order to test how pure it is 2. to perform an…. MedicineNet does not provide medical advice, diagnosis or treatment. biopsy - examination of tissues or liquids from the living body to … Meaning of assay. The factor VIII assay is a blood test to measure the activity of factor VIII. Both words come from the French "essai" which in turn came from the Late Latin "exagium" meaning the "act of weighing". The analyte can be a drug, biochemical substance, or cell in an organism or organic sample. in order to determine the quantity of gold, silver, or other metal in it. A laboratory test to find and measure the amount of a specific substance. to analyze (an ore, alloy, etc.) To try or attempt. ELISA: With antigen capture ELISA, the wells are coated with antibody to the virus. What does assay mean? Learn more. assay - WordReference English dictionary, questions, discussion and forums. home/medterms medical dictionary a-z list / assay definition. Medical Definition of assay. An assay procedure is generally employed to evaluate an intensive property of the measured entity, called "analyte". The biological or pharmacological potency of a drug. Assay is also used as a verb and has several related meanings in this role: To try or attempt. You are here: Home / Medical Terms / A / assay. Was this definition helpful? 9. In the process, the single cells under investigation are placed in low melting point agarose which is a gel-like polysaccharide derived from seaweed. 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). 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. An analysis of the chemical composition or strength of a substance. From Hart and Shears, 1997. Terms of Use. 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 … (Optional) After an assay has … Assay definition: An assay is a test of a substance to find out what chemicals it contains. A chemical examination of metals, by which the quantity of valuable or precious metal contained in any mineral or metallic mixture is ascertained. 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. 2. An assay usually aims to measure an analyte's intensive propertyand express it … For example, an assay may be done of a vaccine to determine its potency. A specific chemical, enzymatic, immunologic or radioimmune-mediated reaction and track usage American Dictionary an property. 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