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Measure the amount of a target entity
An assay is an investigative (analytic) procedure in laboratory medicine, mining, pharmacology, environmental biology and molecular biology for qualitatively
Assay
Topics referred to by the same term
Look up assayer in Wiktionary, the free dictionary. Assayer may refer to: a person carrying out a metallurgical assay The Assayer, a 1623 book by Galileo
Assayer
Compositional analysis of an ore, metal, or alloy
metallurgical assay is a compositional analysis of an ore, metal, or alloy, usually performed in order to test for purity or quality. Some assay methods are
Metallurgical_assay
1623 book by Galileo Galilei
The Assayer (Italian: Il saggiatore) is a book by Galileo Galilei, published in Rome in October 1623. It is generally considered to be one of the pioneering
The_Assayer
Institution set up to test the purity of precious metals
Assay offices are institutions set up to assay (test the purity of) precious metals. This is often done to protect consumers from buying fake items. Upon
Assay_office
Crude oil analysis
A crude oil assay is the chemical evaluation of crude oil feedstocks by petroleum testing laboratories. Each crude oil type has unique molecular and chemical
Crude_oil_assay
Method to determine protein concentration
acid assay (BCA assay), also known as the Smith assay, after its inventor, Paul K. Smith at the Pierce Chemical Company, is a biochemical assay for determining
Bicinchoninic_acid_assay
multiplex assay is a type of immunoassay that uses magnetic beads to simultaneously measure multiple analytes in a single experiment. A multiplex assay is a
Multiplex_(assay)
Method to detect an antigen using an antibody and enzyme
The enzyme-linked immunosorbent assay (ELISA) (/ɪˈlaɪzə/, /ˌiːˈlaɪzə/) is a commonly used analytical biochemistry assay, first described by Eva Engvall
ELISA
Technique for assessing cell activity
The MTT assay is a colorimetric assay for assessing cell metabolic activity. NAD(P)H-dependent cellular oxidoreductase enzymes may, under defined conditions
MTT_assay
Technique used to study DNA and RNA
mobility shift assay (EMSA) or mobility shift electrophoresis, also referred as a gel shift assay, gel mobility shift assay, band shift assay, or gel retardation
Electrophoretic mobility shift assay
Electrophoretic_mobility_shift_assay
Measure of virus or bacteria concentration
The hemagglutination assay or haemagglutination assay (HA) and the hemagglutination inhibition assay (HI or HAI) were developed in 1941–42 by American
Hemagglutination_assay
Laboratory analysis method
The TOP Assay (Total Oxidizable Precursor Assay) is a laboratory method developed in 2012 that oxidatively converts (unknown) precursor compounds of perfluorocarboxylic
TOP_Assay
Assay to detect nucleic acid
In biology, a branched DNA assay is a signal amplification assay (as opposed to a target amplification assay) that is used to detect nucleic acid molecules
Branched_DNA_assay
Technique in microbiology
The gentamicin protection assay or survival assay or invasion assay is a method used in microbiology. It is used to quantify the ability of pathogenic
Gentamicin_protection_assay
Method to determine protein concentration
The Bradford protein assay (also known as the Coomassie protein assay) was developed by Marion M. Bradford in 1976. It is a quick and accurate spectroscopic
Bradford_protein_assay
Stamp indicating the purity of silver objects
although Dutch and UK Assay offices no longer strike their traditional hallmarks exclusively in their own territories and undertake assay in other countries
Silver_hallmarks
Determine the concentration of a virus
being measured and in what biological context. For example, cell-based assays typically measure infectious units (active virus). Other methods may measure
Virus_quantification
Process used in cell biology
Secretion assay is a process used in cell biology to identify cells that are secreting a particular protein (usually a cytokine). It was first developed
Secretion_assay
Scientific testing method
A methylene blue active substances assay, or MBAS assay, is a colorimetric analysis test method that uses methylene blue to detect the presence of anionic
MBAS_assay
Agency of the US government (1792–1980)
The United States Assay Commission was an agency of the U.S. federal government from 1792 to 1980. Its function was to supervise the annual testing of
United States Assay Commission
United_States_Assay_Commission
The Fischer assay is a standardized laboratory test for determining the oil yield from oil shale to be expected from a conventional shale oil extraction
Fischer_assay
Laboratory method for measuring enzymatic activity
Enzyme assays are laboratory methods for measuring enzymatic activity. They are vital for the study of enzyme kinetics and enzyme inhibition. The quantity
Enzyme_assay
Laboratory test for clinically significant alloantibodies
monolayer assay (MMA) is used to determine the clinical significance of alloantibodies produced by blood transfusion recipients. The assay is used to
Monocyte_monolayer_assay
Method in molecular biology
The toeprinting assay, also known as the primer extension inhibition assay, is a method used in molecular biology that allows one to examine the interactions
Toeprinting_assay
Assay created to determine survival of organs, cells, or tissues
A viability assay is an assay that is created to determine the ability of organs, cells or tissues to maintain or recover a state of survival. Viability
Viability_assay
Detection of protein-protein interactions
Proximity ligation assay (in situ PLA) is a technology that is used to detect interactions between two antibody-detectable components such as proteins
Proximity_ligation_assay
Medical intervention
Immunoradiometric assay (IRMA) is an assay that uses radiolabeled antibodies. It differs from conventional radioimmunoassay (RIA) in that the compound
Immunoradiometric_assay
Molecular biology method used to detect DNA fragmentation
apoptotic cells, or to detect excessive DNA breakage in individual cells. The assay relies on the use of terminal deoxynucleotidyl transferase (TdT), an enzyme
TUNEL_assay
replication, the HpaII tiny fragment Enrichment by Ligation-mediated PCR Assay (HELP Assay) is one of several techniques used for determining whether DNA has
HELP_assay
The York Assay Office was an institution set up to assay (test the purity of) precious metals in the city of York, England. Though silver marks associated
York_Assay_Office
Medical diagnostic method
given antigen within a sample (e.g. blood, CSF). The tetramers used in the assay are made up of four major histocompatibility complex (MHC) molecules, which
Tetramer_assay
Edinburgh Assay Office is the last remaining assay office in Scotland and one of four which remain in the United Kingdom. The Edinburgh Assay Office traces
Edinburgh_Assay_Office
One of the four assay offices in the United Kingdom
The Birmingham Assay Office, one of the four assay offices in the United Kingdom, is located in the Jewellery Quarter, Birmingham. The development of
Birmingham_Assay_Office
Test for damage to DNA
The single cell gel electrophoresis assay (SCGE, also known as comet assay) is an uncomplicated and sensitive technique for the detection of DNA damage
Comet_assay
A clonogenic assay is a cell biology technique for studying the effectiveness of specific agents on the survival and proliferation of cells. It is frequently
Clonogenic_assay
Chemical test for detecting peptide bonds
positive reaction to the peptide-like bonds in the biuret molecule. In this assay, the copper(II) binds with nitrogen atoms present in the peptide bonds of
Biuret_test
hybridization assay is a type of Ligand Binding Assay (LBA) used to quantify nucleic acids in biological matrices. Hybridization assays can be in solution
Hybridization_assay
Community in Delta State, Nigeria
thus resulting in the title as "Asaba-Assay" which is "Asaba on the lower Ase River."[citation needed] Asaba-Assay is situated on a flood basin which is
Asaba-Assay
Lysis buffer
Radioimmunoprecipitation assay buffer (RIPA buffer) is a lysis buffer used to lyse cells and tissue for the radio immunoprecipitation assay (RIPA). This buffer
Radioimmunoprecipitation assay buffer
Radioimmunoprecipitation_assay_buffer
Unit of mass or volume with different values
ton. Assay ton (abbreviation 'AT') is not a unit of measurement but a standard quantity used in assaying ores of precious metals. A short assay ton is
Ton
Clinical pathology test
Micro-Culture Kinetic (MiCK) assay, developed by DiaTech Oncology, is a clinical pathology test that measures apoptosis induced in specific patient's
MiCK_assay
Test used to measure blood coagulation
potential (OHP) test is a global coagulation assay which can be used to measure coagulation. The OHP assay measures total fibrin generation in the presence
Overall_hemostatic_potential
Official stamp on gold, silver, etc.
by an assay office (assay mark). Hallmarks are a guarantee of certain purity or fineness of the metal, as determined by official metal (assay) testing
Hallmark
Laboratory assessment of re-epithelialization in cell cultures
wound healing assay is a laboratory technique used to study cell migration and cell–cell interaction. This is also called a scratch assay because it is
Wound_healing_assay
Medical laboratory test
(ELISpot) is a type of assay that focuses on quantitatively measuring the frequency of cytokine secretion for a single cell. The ELISpot Assay is also a form
ELISpot
United States historic place
Ott's Assay Office is a historic assay office located at 130 Main Street in Nevada City, California. The building was constructed in 1851 as a drug store;
Ott's_Assay_Office
Experimental tools for evaluation of chemotactic ability of cells
Chemotaxis assays are experimental tools for the evaluation of the chemotactic ability of prokaryotic or eukaryotic cells. A wide variety of techniques
Chemotaxis_assay
Uranium processed to increase the percentage of uranium-235
Slightly enriched uranium (SEU) has a concentration of under 2% 235U. High-assay LEU (HALEU) is enriched between 5% and 20% and is called for in many small
Enriched_uranium
American biotechnology company
automation instrument and the Proteograph RISE assay kit. In June 2023, the company introduced the Proteograph XT assay kit, which increased system throughput
Seer,_Inc.
Measure of statistical effect size
is also known as Z-prime, to judge whether the response in a particular assay is large enough to warrant further attention. In HTS, experimenters often
Z-factor
Type of medical test
release assay (IGRA) is a medical test used in the diagnosis of some infectious diseases, especially tuberculosis. Interferon-γ (IFN-γ) release assays rely
Interferon gamma release assay
Interferon_gamma_release_assay
Technique in biology
The tetraploid complementation assay is a technique in biology in which cells of two mammalian embryos are combined to form a new embryo. It is used to
Tetraploid complementation assay
Tetraploid_complementation_assay
Form of agglutination in red blood cells
typing and the quantification of virus dilutions in a haemagglutination assay. Blood type can be determined by using antibodies that bind to the A or
Hemagglutination
A kinetic exclusion assay (KinExA) is a type of bioassay in which a solution containing receptor, ligand, and receptor-ligand complex is briefly exposed
Kinetic_exclusion_assay
Assay office in the United Kingdom
Goldsmiths' Company Assay Office in London (also known as Assay Office London or the London Assay Office (LAO)) is the oldest assay office in the United
The Goldsmiths' Company Assay Office
The_Goldsmiths'_Company_Assay_Office
An ethidium homodimer assay can be used to detect dead or dying cells. Ethidium homodimer is a membrane-impermeable fluorescent dye which binds to DNA
Ethidium_homodimer_assay
System of measuring the instability of a protein under varying conditions
A thermal shift assay (TSA) measures the stability of a protein by the change in its thermal denaturation temperature. This is done under varying conditions
Thermal_shift_assay
Molecular biology technique
molecular biology and microbiology. Several kinds of GUS reporter gene assay are available, depending on the substrate used. The term GUS staining refers
GUS_reporter_system
DNA analysis method
The Illumina Methylation Assay using the Infinium I platform uses 'BeadChip' technology[clarification needed] to generate a comprehensive genome-wide
Illumina_Methylation_Assay
Procedure to study insect hatching or emergence from pupa
Eclosion assays are experimental procedures used to study eclosion in insects, particularly in the model organism drosophila (fruit flies). Eclosion is
Eclosion_assay
Surveyor nuclease assay is an enzyme mismatch cleavage assay used to detect single base mismatches or small insertions or deletions (indels). Surveyor
Surveyor_nuclease_assay
Laboratory technique to detect viruses
Indirect immunoperoxidase assay (IPA) is a laboratory technique used to detect and titrate viruses that do not cause measurable cytopathic effects and
Indirect immunoperoxidase assay
Indirect_immunoperoxidase_assay
A DNase footprinting assay is a DNA footprinting technique used in molecular biology/biochemistry that detects DNA-protein interaction by leveraging the
DNase_footprinting_assay
In vitro screens for estrogenic (YES) and androgenic (YAS) activity
of a known activating substance. The YES/YAS assay is performed in 96-well microtiter plates. Total assay time is usually 2–3 days, but faster protocols
YES_and_YAS_assay
Biochemical analysis procedure
A ligand binding assay (LBA) is an assay, or an analytic procedure, which relies on the binding of ligand molecules to receptors, antibodies or other
Ligand_binding_assay
Protein detection method
The proximity extension assay (PEA) is a method for detecting and quantifying the amount of many specific proteins present in a biological sample such
Proximity_extension_assay
United States historic place
The U.S. Immigrant Station and Assay Office Seattle is a four-story neoclassical style building located at 815 Airport Way South in Seattle, Washington
U.S. Immigrant Station and Assay Office
U.S._Immigrant_Station_and_Assay_Office
Measurement of genetic variations
that will be used in the assay. If the probe sequence of the molecular beacon encounters its target genomic DNA during the assay, it will anneal and hybridize
SNP_genotyping
Statistical measure of a binary classification
accurately be measured by an assay (synonymously to detection limit), and "analytical specificity" is defined as the ability of an assay to measure one particular
Sensitivity_and_specificity
Biochemical colorimetric method
The Lowry protein assay is a biochemical assay for determining the total level of protein in a solution. The total protein concentration is exhibited by
Lowry_protein_assay
Test to measure pain
A nociception assay (nocioception or nocioperception assay) evaluates the ability of an animal, usually a rodent, to detect a noxious stimulus such as
Nociception_assay
Gold assay finding protein concentration
The colloidal gold protein assay is a highly sensitive biochemical assay for determining the total concentration of protein in a solution (~0.1 ng/μL
Colloidal_gold_protein_assay
Types of chemical compounds
Pan-assay interference compounds (PAINS) are chemical compounds that often give false positive results in high-throughput screens. PAINS tend to react
Pan-assay interference compounds
Pan-assay_interference_compounds
Assay office in the United Kingdom
407444°N 1.495750°W / 53.407444; -1.495750 The Sheffield Assay Office is one of the four remaining assay offices in the United Kingdom, the other three being
Sheffield_Assay_Office
Assay for live platelet function
The ristocetin-induced platelet aggregation (RIPA) is an ex vivo assay for live platelet function. It measures platelet aggregation with the help of von
Ristocetin-induced platelet aggregation
Ristocetin-induced_platelet_aggregation
Boulder County, Colorado historic place
The Wall Street Assay Office is a historic commercial building related to precious metal mining in the western outskirts of Boulder, Colorado in an area
Wall_Street_Assay_Office
United States historic place
The Assay Office is a historic building at 210 Main Street in Boise, Idaho. It is significant for its role in the history of mining in Idaho, and was
Assay_Office_(Boise,_Idaho)
German gynaecologist and Auschwitz experimenter
Carl Clauberg (28 September 1898 – 9 August 1957) was a German gynecologist who conducted medical experiments on Jewish and Romani women at Auschwitz concentration
Carl_Clauberg
Biochemical test for syphilis
Treponema pallidum particle agglutination assay (also called TPPA test) is an indirect agglutination assay used for detection and titration of antibodies
Treponema pallidum particle agglutination assay
Treponema_pallidum_particle_agglutination_assay
Medical diagnostic method
tests.[citation needed] Global tests, also known as global coagulation assays (GCAs), characterize the results of work of the whole clotting cascade.
Coagulation_testing
Medical diagnostic method
The Mesomark Assay is an in vitro test to monitor and possibly diagnose pleural mesothelioma and peritoneal mesothelioma. Developed by Fujirebio Diagnostics
Mesomark_assay
The term dilution assay is generally used to designate a special type of bioassay in which one or more preparations (e.g. a drug) are administered to
Dilution_assay
Assay sensitivity is a property of a clinical trial defined as the ability of a trial to distinguish an effective treatment from a less effective or ineffective
Assay_sensitivity
Refining process in metallurgy
common processes for refining precious metals. By then, fire assays were used for assaying minerals: testing fresh metals such as lead and recycled metals
Cupellation
Pierce Protein Assay is a method of protein quantification. It provides quick estimation of the protein amount in a given sample. The assay is separated
Pierce_Protein_Assay
Biochemical analysis procedure
structural dynamics response (SDR) assay is a type of biophysical test used to measure ligand binding to a target protein. The assay is configured as a simple
Structural Dynamics Response Assay
Structural_Dynamics_Response_Assay
Synthetic pigment
tools like prick punches. Prussian blue is formed in the Prussian blue assay for total phenols. Samples and phenolic standards are given acidic ferric
Prussian_blue
Toxicological test
The murine local lymph node assay (LLNA) is an in vivo test for skin sensitisation. LLNA has largely superseded the guinea pig maximisation test and the
Local_lymph_node_assay
Sperm Chromatin Structure Assay (SCSA) is a diagnostic approach that detects sperm abnormality with a large extent of DNA fragmentation. First described
Sperm Chromatin Structure Assay
Sperm_Chromatin_Structure_Assay
Cell type in which HIV infects and replicates
replicates. HIV tropism of a patient's virus is measured by the Trofile assay. HIV can infect a variety of cells such as CD4+ helper T-cells and macrophages
HIV_tropism
Highly sensitive assay for prion detection
Real-time quaking-induced conversion (RT-QuIC) is a highly sensitive assay for prion detection. It is nearly 100% specific for the diagnosis of Creutzfeldt-Jakob
Real-time quaking-induced conversion
Real-time_quaking-induced_conversion
In biochemistry or chemistry, filter binding assay is a method study the binding of macromolecules. It enables the determination of the binding constant
Filter_binding_assay
Effort to find civilizations not from Earth
followed in 1985 by Project "META", for "Megachannel Extra-Terrestrial Assay". The META spectrum analyzer had a capacity of 8.4 million channels and
Search for extraterrestrial intelligence
Search_for_extraterrestrial_intelligence
Scientific analysis of semen
influence results. The assay is also referred to as ejaculate analysis, human sperm assay (HSA), sperm function test, and sperm assay.[citation needed] Semen
Semen_analysis
Analytical technique used in molecular biology
in tissues and cells by immunostaining, and enzyme-linked immunosorbent assay (ELISA). The name Western blot is a play on the Southern blot, a technique
Western_blot
Methods for diagnosing tuberculosis
different molecular methods and assays have been defined. Real-time PCR (RT-PCR), microarrays, PURE-LAMP, NGS, and WGS are assays that applicable for all taxa
Diagnosis_of_tuberculosis
Antioxidant capacity of a given substance
The Trolox equivalent antioxidant capacity (TEAC) assay measures the antioxidant capacity of a given substance, as compared to the standard, Trolox. Most
Trolox equivalent antioxidant capacity
Trolox_equivalent_antioxidant_capacity
Within the field of molecular biology, a protein-fragment complementation assay, or PCA, is a method for the identification and quantification of protein–protein
Protein-fragment complementation assay
Protein-fragment_complementation_assay
Solution used for the colorimetric determination of phenolic compounds
phosphomolybdate and phosphotungstate used for the colorimetric in vitro assay of phenolic and polyphenolic antioxidants, also called the gallic acid equivalence
Folin–Ciocalteu_reagent
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