1. The quality of being specific as, for example, she showed the use of specificity in her diagnosis. 2. The proportion of persons without a disease who are correctly identified by a test. The specificity is the number of true negative results divided by the sum of the numbers of true negative plus false positive results.

See: Analytic specificity.

When referring to a medical test, specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific [..]

The property that a policy measure applies to one or a group of enterprises or industries, as opposed to all industries.

True negative rate (see Confusion matrix).

Proportion of truly non-diseased persons who are identified by the screening test.

the quality of being specificThe specificity of your description was appreciated by the examination board.

In the clinical laboratory: 1. a test's ability to correctly exclude individuals who do not have the given disease or disorder; 2. a test's ability to correctly detect or measure only the substance of interest and exclude other substances

the quality of being specific The reporter's recommendations lack specificity.Check pronunciation: specificity

1829, from French spécificité or else a native formation from specific + -ity.

The capacity of a drug to manifest only one kind of action. A drug of perfect specificity of action might increase, or decrease, a specific function of a given cell type, but it would not do both. Nic [..]

The specificity of a test is the probability of the test providing a negative result if the disease is truly absent. As the specificity of a test increases, the proportion of false positives decreases [..]

How well a test correctly identifies people who do not have what it is testing for. It is the proportion of people without the disease or condition that are correctly identified by the study test. For [..]

The proportion of people previously identified as free of a particular disorder who score in the negative (unaffected) range on a new diagnostic test For example, a new test to diagnose stuttering is [..]

Specificity is the fraction of the predicted results that really are true results

Specificity is a kind of definiteness, expressed by the interpretation of or grammatical marking on a noun or noun phrase, indicating that the speaker presumably knows the identity of the referent(s).

1. the quality of being unique from everything else. 2. A probability that a person will test negative for a condition being tested. It is commonly called as specificity.

In indexing, the degree to which the meaning of a subject heading or descriptor matches in breadth one of the major subjects of the document to which it is assigned. For example, although the Library [..]

Where individual molecules take up a stable conformation with specific biological functions.

The specificity of a binder is the ability of its binding site to distinguish between the ligand to which the binder is specific and other compounds.

The proportion of people free of a disease who have a negative test.

This is one of a set of measures used to assess the accuracy of a diagnostic test (see sensitivity, negative predictive value and positive predictive value). Specificity is the proportion of people without a disease who are correctly identified as not having that disease by the diagnostic test. For example, if a test has a specificity of 95%, this [..]

(n) the quality of being specific rather than general(n) the quality of being specific to a particular organism

The ability of a test to correctly classify an individual as not having a disease or condition (negative test result) when it is absent.

Specificity (of an assay or test) is the ability of an experiment or trial to correctly detect only the particular effect being studied – for instance, a difference in symptoms between two groups of p [..]

Proportion of people without the target disorder who have a negative test. It is used to assist in assessing and selecting a diagnostic test/sign/symptom.

The degree to which a given analytical procedure detects a specified component but not other components that may be present in the sample (WHO, 1979).

The property of Antibodies which enables them to react with some Antigenic Determinants and not with others. Specificity is dependent on chemical composition, physical forces, and Molecular Structure [..]

The properties of a pathogen that makes it capable of infecting one or more specific hosts. The pathogen can include Parasites as well as Viruses; Bacteria; Fungi; or Plants.

Characteristic restricted to a particular organ of the body, such as a Cell type, metabolic response or expression of a particular protein or Antigen.

The restriction of a characteristic Behavior, anatomical structure or physical system, such as immune response; metabolic response, or Gene or Gene variant to the members of one species. It refers to [..]

A characteristic feature of enzyme activity in relation to the kind of substrate on which the enzyme or catalytic molecule reacts.

The property of the T-Cell Receptor which enables it to react with some Antigens and not others. The specificity is derived from the structure of the receptor's variable region which has the abil [..]

The probability that a medical test will correctly produce a negative test result for a person who does not have the condition being tested. In other words, a specific test is one that produces true negative results. For example, the specificity of the Western Blot is very high; the test seldom mistakes antibodies to other diseases as antibodies to [..]

In the context of surveillance, the measure of the degree to which cases detected through a surveillance system actually have the disease. Spontaneous reporting

When referring to a medical test, specificity refers to the percentage of people who test negative for a specific disease among a group of people who do not have the disease. No test is 100% specific because some people who do not have the disease will test positive for it (false positive).

The ability of a test to fail on people you know don't have the infection. More precisely TN/(TN+FP), where TN is the number of true negatives and FP is the number of false positives.

The ability of a test to differentiate between the disease or pathogen of significance and other agents. High specific tests may generate false positive results.

Statistical measure that estimates the proportion of negatives which are correctly identified as such. It is complementary to the false positive rate

The proportion of persons without disease who are correctly identified by a screening test or case definition as not having disease.

The relationship between not having a symptom of an outcome and not having the outcome itself; or the percent chance of not getting a false negative (see formulas).

The proportion of truly non-diseased persons, as measured by the gold standard, who are also identified by the diagnostic test under study.

Describes the observation that only a subset of hosts is susceptible to infection. A high specificity refers to the observation that only a few host lines can be infected by a given parasite.

is the ability of a diagnostic or screening test to exclude people who are free of disease (‘correct negative’). Specificity is the number of people who tested negative and who are truly disease-free divided by the total number of people who are truly disease free.

(When used with Antibody ) measurement of how well an Antibody attaches to only one antigen or epitope without contamination from other antigens or epitopes.

Proportion of persons without condition who test negative:

The ability to measure (or remove) accurately and specifically the analyte of interest in the presence of other products that may be expected to be present in the sample or product.