Medical Definition of assay
(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.
What do u mean by assay?
An assay is
a process of analyzing a substance to determine its composition or quality
. The term is often used in the mining industry to refer to tests of ore or minerals. The term assay is also used in the environmental, chemical and pharmaceutical industries.
What does assay mean in medical terms?
Medical Definition of assay
(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.
What does assay mean in microbiology?
[as ́a]
determination of the purity of a substance or the amount of any particular constituent of a mixture
. biological assay bioassay; determination of the potency of a drug or other substance by comparing the effects it has on animals with those of a reference standard.
What are the different types of assays?
- Immunoassays (IAs): — Enzyme immunoassays (EIAs) — Chemiluminescent immunoassays (CLIAs) — Haemagglutination (HA)/particle agglutination (PA) assays. — Rapid/simple single-use assays (rapid tests)
- Nucleic acid amplification technology (NAT) assays.
What is the difference between purity and assay?
The main difference between assay and purity is that
an assay is the determination of one of the main component in a sample whereas purity is the determination of impurities in a sample
. … Assay and purity are two types of measurements used to determine the components of a sample.
What is assay value?
i.
The quantity of an ore’s valuable constituents, determined by multiplying its assay grade or percentage of valuable constituents by its dimensions
. The figure for precious metals is generally given in troy ounces per ton of ore, or per assay ton.
Why do we do assay?
Assay: An assay is an analysis done
to determine: The presence of a substance and the amount of that 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).
What is minimum assay?
we can understand what the minimum assay % stands for just from the context. For example, if you found a label of a bottle as Carbonate sodium 20%, it is mean that the solution is prepared by dissolving 20 g of carbonate sodium into a total volume of 100 ml (including the volume of the added amount of carbonate sodium)
Why do we perform microbial assay?
Microbial assays or microbiological assays could be a sort of
bioassays designed to analyse the compounds or substances that have impact on micro-organisms
. They help to estimate concentration and efficiency of antibiotics. Also facilitate in determination of the simplest anti-biotic appropriate for patient recovery.
Why we do assay by HPLC?
HPLC methods
help analyze drug concentration in biological fluids to evaluate ADME
(absorption, distribution, metabolism, and excretion) profile of the drug. The drug discovery phase also involves pharmacology and toxicology assessments of the drug compounds.
What is a functional assay?
In this regard, functional assays can be defined as
systematic in vivo experiments that are designed to determine the involvement of each protein in a particular cellular pathway or biological process
.
How many types of assay methods are there?
There are
four main types
of ELISA – direct, indirect, sandwich, and competitive – each of which has a slightly different function.
What is cell death assay?
Including
assays
using dye dilution, BrdU/EdU, and DNA staining dyes. These are used to monitor the growth of a
cell
population, detect generations of daughter
cells
, or analyze the
cell
cycle state of a
cell
population. You can use also these tests to
assay cell viability
.
Apoptosis assay
/
cell death
analysis guide.
What is a cell-based assay?
Cell-based assays
assess the efficacy of compounds in a cellular environment
, which is crucial to understanding compound behaviors in a biological system and align readouts with a translatable biomarker.
