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Agglutination Tests definition: Tests that are dependent on the clumping of cells, microorganisms, or particles when mixed with specific antiserum. (From Stedman, 26th ed)
agglutination reaction definition: mixing of antibodies with their corresponding antigens on the surface of large, easily sedimented particles such as animal cells, erythrocytes, or bacteria; the antibodies cross-link the particles, forming visible clumps.
Aptitude Tests definition: Primarily non-verbal tests designed to predict an individual's future learning ability or performance.
Breath Tests definition: Any tests done on exhaled air.
breath test definition: any test done on exhaled air.
Bronchial Provocation Tests definition: Tests involving inhalation of allergens (nebulized or in dust form), nebulized pharmacologically active solutions (e.g., histamine, methacholine), or control solutions, followed by assessment of respiratory function. These tests are used in the diagnosis of asthma.
Caloric Tests definition: Elicitation of a rotatory nystagmus by stimulating the semicircular canals with water or air which is above or below body temperature. In warm caloric stimulation a rotatory nystagmus is developed toward the side of the stimulated ear; in cold, away from the stimulated side. Absence of nystagmus indicates the labyrinth is not functioning.
Carcinogenicity Tests definition: Tests to experimentally measure the tumor-producing/cancer cell-producing potency of an agent by administering the agent (e.g., benzanthracenes) and observing the quantity of tumors or the cell transformation developed over a given period of time. The carcinogenicity value is usually measured as milligrams of agent administered per tumor developed. Though this test differs from the DNA-repair and bacterial microsome MUTAGENICITY TESTS, researchers often attempt to correlate the finding of carcinogenicity values and mutagenicity values.
carcinogen testing definition: tests to experimentally measure the tumor producing or cancer cell producing potency of an agent by administering the agent and observing the quantity of tumors or the cell transformation developed over a given period of time; the carcinogenicity value is usually measured as milligrams of agent administered per tumor developed.
Coombs' Test definition: Hemagglutination test in which Coombs' reagent (antiglobulin, or anti-human globulin rabbit immune serum) is added to detect incomplete (non-agglutinating, univalent, blocking) antibodies coating erythrocytes. The direct test is applied to red cells which have been coated with antibody in vivo (e.g., in hemolytic disease of newborn, autoimmune hemolytic anemia, and transfusion reactions). The indirect test is applied to serum to detect the presence of antibody (e.g., in detection of incompatibility in cross-matching tests, detection and identification of irregular antibodies, and in detection of antibodies not identifiable by other means).
Coombs Test definition: Hemagglutination test in which Coombs' reagent (antiglobulin, or anti-human globulin rabbit immune serum) is added to detect incomplete (non-agglutinating, univalent, blocking) antibodies coating erythrocytes. The direct test is applied to red cells which have been coated with antibody in vivo (e.g., in hemolytic disease of newborn, autoimmune hemolytic anemia, and transfusion reactions). The indirect test is applied to serum to detect the presence of antibody (e.g., in detection of incompatibility in cross-matching tests, detection and identification of irregular antibodies, and in detection of antibodies not identifiable by other means). (MeSH)
Clinical Enzyme Tests definition: Analyses for a specific enzyme activity, or of the level of a specific enzyme that is used to assess health and disease risk, for early detection of disease or disease prediction, diagnosis, and change in disease status.
Exercise Test definition: Controlled physical activity, more strenuous than at rest, which is performed in order to allow assessment of physiological functions, particularly cardiovascular and pulmonary, but also aerobic capacity. Maximal (most intense) exercise is usually required but submaximal exercise is also used. The intensity of exercise is often graded, using criteria such as rate of work done, oxygen consumption, and heart rate.
FIGLU Test definition: A urine test for formiminoglutamic acid, an intermediate metabolite in L-histidine catabolism in the conversion of L-histidine to L-glutamic acid. It may be an indicator of vitamin B12 or folic acid deficiency or liver disease.
Flocculation Tests definition: Precipitin tests which occur over a narrow range of antigen-antibody ratio, due chiefly to peculiarities of the antibody (precipitin). (From Stedman, 26th ed)
Genetic Complementation Test definition: A test used to determine whether or not complementation (compensation in the form of dominance) will occur in a cell with a given mutant phenotype when another mutant genome, encoding the same mutant phenotype, is introduced into that cell.
Hardness Tests definition: A test to determine the relative hardness of a metal, mineral, or other material according to one of several scales, such as Brinell, Mohs, Rockwell, Vickers, or Shore. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
hearing test definition: a general term for the measurement of hearing.
Hemagglutination Tests definition: Sensitive tests to measure certain antigens, antibodies, or viruses, using their ability to agglutinate certain erythrocytes. (From Stedman, 26th ed)
hemagglutination test definition: sensitive test to measure certain antigens, antibodies, or viruses, using their ability to agglutinate certain erythrocytes.
Hematologic Tests definition: Tests used in the analysis of the hemic system.
blood test definition: tests used in the analysis of the hemic system.
Hematology Test definition: A laboratory test that has blood as its specimen.
Immunologic Tests definition: Immunologic techniques involved in diagnosis.
Immunology Test definition: Laboratory test involving interaction of antigens with specific antibodies.
Ink Blot Tests definition: Projective tests utilizing ink blots to which a subject responds. They are used in personality diagnosis.
Intelligence Tests definition: Standardized tests that measure the present general ability or aptitude for intellectual performance.
intelligence test definition: standardized tests which measure a wide range of abilities, including verbal, numerical and social competence; includes Stanford-Binet test, Wechsler-Bellevue scale and Wechsler Intelligence scale.
Intradermal Tests definition: Skin tests in which the sensitizer is injected.
Laboratory Procedure definition: Any procedure that involves testing or manipulating a sample of blood, urine, or other body substance in a laboratory setting.
laboratory test definition: A medical procedure that involves testing a sample of blood, urine, or other substance from the body. Tests can help determine a diagnosis, plan treatment, check to see if treatment is working, or monitor the disease over time.
Language Tests definition: Tests designed to assess language behavior and abilities. They include tests of vocabulary, comprehension, grammar and functional use of language, e.g., Development Sentence Scoring, Receptive-Expressive Emergent Language Scale, Parsons Language Sample, Utah Test of Language Development, Michigan Language Inventory and Verbal Language Development Scale, Illinois Test of Psycholinguistic Abilities, Northwestern Syntax Screening Test, Peabody Picture Vocabulary Test, Ammons Full-Range Picture Vocabulary Test, and Assessment of Children's Language Comprehension.
Leukocyte Adherence Inhibition Test definition: Test for cell-mediated antitumor immunity and related serum blocking factors based on the finding that leukocytes from cancer patients, but not from controls, when mixed in vitro with antigenic extracts of tumors of the same histological type, undergo a diminution in their normal adherence to glass surfaces. Sera from tumor-bearing patients block the LAI reaction of their own leukocytes or those of other patients with the same type of tumor.
Limulus Test definition: Sensitive method for detection of bacterial endotoxins and endotoxin-like substances that depends on the in vitro gelation of Limulus amebocyte lysate (LAL), prepared from the circulating blood (amebocytes) of the horseshoe crab, by the endotoxin or related compound. Used for detection of endotoxin in body fluids and parenteral pharmaceuticals.
Micronucleus Tests definition: Induction and quantitative measurement of chromosomal damage leading to the formation of micronuclei (MICRONUCLEI, CHROMOSOME-DEFECTIVE) in cells which have been exposed to genotoxic agents or IONIZING RADIATION.
Mutagenicity Tests definition: Tests of chemical substances and physical agents for mutagenic potential. They include microbial, insect, mammalian cell, and whole animal tests.
mutagen testing definition: tests of chemical substances and physical agents for mutagenic potential, including cell culture, microbial, insect, mammalian cell, and whole animal tests.
Nasal Provocation Tests definition: Application of allergens to the nasal mucosa. Interpretation includes observation of nasal symptoms, rhinoscopy, and rhinomanometry. Nasal provocation tests are used in the diagnosis of nasal hypersensitivity, including RHINITIS, ALLERGIC, SEASONAL.
Neuropsychological Tests definition: Tests designed to assess neurological function associated with certain behaviors. They are used in diagnosing brain dysfunction or damage and central nervous system disorders or injury.
neuropsychological test definition: tests designed to assess neurological function associated with certain behaviors; used in diagnosing brain dysfunction or damage and central nervous system disorders or injury.
Neutralization Tests definition: The measurement of infection-blocking titer of ANTISERA by testing a series of dilutions for a given virus-antiserum interaction end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology (CPE) or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50).
antibody neutralization test definition: titration of an antiserum by testing a series of dilutions of virus or immune serum to a given end-point, which is generally the dilution at which tissue cultures inoculated with the serum-virus mixtures demonstrate cytopathology or the dilution at which 50% of test animals injected with serum-virus mixtures show infectivity (ID50) or die (LD50).
Pain Measurement definition: Scales, questionnaires, tests, and other methods used to assess pain severity and duration in patients or experimental animals to aid in diagnosis, therapy, and physiological studies.
Pain Measurement definition: see:http://www.nlm.nih.gov/mesh/MBrowser.html
Pain Assessment definition: The evaluation of pain complaints. Measurements should be objective on the part of the practitioner, based on subjective information from the patient. Measurements may also be indirect, by such assessments as respiratory rate and effort, withdrawal, guarding, or other appropriate assessment techniques.
Microbiology Test definition: A laboratory procedure to detect microorganisms in a sample.
diagnostic test definition: heading term for tests not treed elsewhere under DIAGNOSIS.