An assay that uses a living system, such as an intact cell, as a component.

Laboratory analytical test in which the effects of a waste stream or effluent upon living organisms are measured.

Determining the physiological effect of a substance (such as a drug) by comparing its effects on a test tissue, organ, or living organism with that of some standard substance; in contrast to chemical assay or analysis.

(Bioessai) Assessment of the toxicity of a substance by observation of its effects on a living organism in the laboratory.

A test used to evaluate the relative potency of a chemical or mixture of chemicals by comparing its effect on a living organism with the effect of a standard preparation on the same organism. Bioassays are frequently used in the pharmaceutical industry to evaluate the potency of vitamins and drugs.

Determination of the relative strength of a drug by comparing its effect on a test organism with that of a standard preparation.

The quantitative evaluation of the potency of a substance by assessing its effects on tissues, cells, live experimental animals, or humans. See also assay.

Diverse sets of analytical methodologies, which utilize living organisms - applications range from assessment of water pollutants to screening pharmaceuticals.

Quantitative determination of herbicide concentration by use of sensitive indicator plants or other biological agents.

An assay for the activity or potency of a substance that involves testing its activity on living material.

The process of using the response of living organisms to determine the effect of a treatment.

A determination of the concentration of a substance in the body by the analysis of urine, blood, feces, bone, or tissue. The use of the living organism to measure the amount of a substance that has been absorbed.

Placing sensitive test organisms in contaminated conditions for a designated time period in an attempt to ascertain any adverse effects they may experience.

Testing the strength of a drug or other substance by examining its effects on a living organism and comparing it with those of a standard substance.

A laboratory test that uses organisms to evaluate whether a sample is toxic.

A simple biological test that uses an indicator organism to measure the potency of a given substance in a biological system. An example of a bioassay would be a test that measures algal growth in response to different nutrient concentrations.

A method of determining the amount and potency of a compound by quantifying its effect on living organisms.

A way of showing or measuring the effect of biological treatment on a particular waste or substance, or A method of determining toxic effects of industrial wastes or other wastes by using live organisms such as fish for test organisms.

a procedure for determining the concentration, purity, and/or biological activity of a substance (e

a simple, inexpensive, and accurate way to determine if herbicide residues are present at high enough concentrations to affect seedling emergence or plant growth

a technique for determining if herbicide (or other chemical) residues are present in soil or water at high enough concentrations to adversely affect plant growth

a test of a substance's activity in organisms (rodents, for example)

a test that examines the effect of a test chemical on a living system

a test that uses animals or live tissue to look for a response to the hormone that is injected or added

an assessment of radioactive materials that may be present inside a person's body through analysis of the person's blood, urine, feces, or sweat.

A method of determining the effect of a compound by quantifying its effect on living organisms or their component parts.

A test using plants, animals, or bacteria to determine the effect of a chemical substance.

a routine lab test to determine biological activity, conducted in cell cultures, live animals or both

A biological test using a living organism such as an animal or plant. Bioassay is often used to test for toxic substances

Procedure which tests the strength of a substance by testing its effects on a living organism under standardized conditions.

The assessment of the uptake of radioactive materials into the body. Two methods are available, in vitro and in vivo. The former involves taking a specimen, usually a fluid such as urine, and measuring the radioactivity in it by use of a suitable counter. The material is assessed external to the body. In vivo techniques involve placing a radiation monitor near the body and measuring the radioactivity being emitted from radioactive material within the body. An example of this is the use of a detector placed near the thyroid to measure uptake of I-125 by counting the gamma radiation emanating directly from the gland.

Compare? A method of testing a material's effects on living organisms.

Determination of the activity of a sample of a drug or other material by noting its effects on live animals or an isolated organ preparation.

Determination of the identity, quantity, and location of radioactive material in the human body by direct measurement or by analysis of materials excreted or removed from the body.

a method used to determine the toxicity of specific chemical contaminants. A number of individuals of a sensitive species are placed in water containing specific concentrations of the contaminant for a specified period of time.

A test to determine the relative strength of a substance by comparing its effect on a test organism with that of a standard preparation.

Determination of the effectiveness of a compound by measuring its effect on animals, tissues, or organisms in comparison with a standard preparation.

A test designed to determine the biological activity of a substance.

Using living organisms to measure the effect of a substance, factor or condition.

An experiment that uses living whole organisms, tissues or cells to measure the presence, the concentration or the relative potency of one or more chemicals (ASTM, 2002).

Use of the reaction of live plants in testing for virus, in contrast to methods using serology.

A test procedure that measures the response of living plants, animals, or tissues to potential pollutants. For example, water fleas have been exposed to the waters of the Bay/Delta estuary, and their responses have been used to determine if the water is harmful to life.

Determination of the potency or concentration of a compound by its effect upon animals, isolated tissues, or microorganisms, as compared with an analysis of its chemical or physical properties.

A measurement of the effects of a substance on living organisms.

A bioassay involves use of a biological organism to test for chemical toxicity. Go to the bioassay page for more information.

A technique for determining the effectiveness of a substance by measuring its effects on animals, tissues or organisms and comparing them to the effects of a standard preparation. Bioessai

A test for measuring the toxicity of an agent by exposing laboratory animals to the substance and observing the effects.

a laboratory assay (test) using a biological test organism.

Estimation of the active power of a sample of a drug, or of other agents or influences, by noting their effects on animals or man.

A test used to evaluate the relative potency of a chemical by comparing its effect on a living organism with the effect of a standard preparation on the same type of organism. The term "bioassay" is commonly, though not technically correct, used interchangeably with the term "toxicity test".

A special assay test for measuring the biological actions of a substance. (See Assay).

Procedure for estimating the concentration or biological activity of a substance (vitamin, hormone, plant growth factor, antibiotic etc.) by measuring its effect on an organism compared to an appropriate standard preparation. Nagel et al. (eds), 1991 BT assay.

Test for toxic effects on an organism typically conducted by exposure to varying concentrations in a laboratory.

The qualitative or quantitative determination of the presence of a substance by response measurements of treated living organisms as compared to measurements on the same untreated, check, or standard living organism.

A laboratory test using live organisms to measure biological effects of a substance, factor, or condition. The effect measured may be growth, reproduction, or survival.

The collection and analysis of human tissue or excreta to determine the amount of radioactive material that has been taken into the body.

(radiobioassay) means the determination of kinds, quantities or concentrations, and, in some cases, the locations of radioactive material in the human body, whether by direct measurement (in vivo counting) or by analysis and evaluation of materials excreted or removed from the human body.

An assay for determining the potency (or concentration) of a substance that causes a biological change in experimental animals.

Test which determines the effect of a chemical on a living organism.

Evaluation of a chemical's toxicity using laboratory animals or other test organisms.

Any quantitative procedure in which a given organism is used for assay purposes. ( 16)

The determination of the biological activity of a substance (e.g., a drug) by observing its effect on an organism, organ or tissue culture.

Bioassay is a shorthand commonly used term for biological assay and is usually a type of experiment. Bioassays are typically conducted to measure the effects of a substance on a living . Bioassays may be or , the latter often involving an estimation of the concentration or potency of a substance by measurement of the biological response that it produces.