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HIV Seropositivity definition: Development of neutralizing antibodies in individuals who have been exposed to the human immunodeficiency virus (HIV/HTLV-III/LAV).
Immunoassay definition: A technique using antibodies for identifying or quantifying a substance. Usually the substance being studied serves as antigen both in antibody production and in measurement of antibody by the test substance.
Immunoassay definition: Immunoassay
Fluorescence Polarization Immunoassay definition: Fluoroimmunoassay where detection of the hapten-antibody reaction is based on measurement of the increased polarization of fluorescence-labeled hapten when it is combined with antibody. The assay is very useful for the measurement of small haptenic antigens such as drugs at low concentrations.
Fluorescence polarization immunoassay (FPIA) definition: Immunoassay, Fluorescence Polarization
Enzyme Immunoassay definition: Any of several immunoassay methods that use an enzyme covalently linked to an antigen or antibody as a label; the most common types are enzyme-linked immunosorbent assay (ELISA) and enzyme-multiplied immunoassay technique (EMIT).
Enzyme Multiplied Immunoassay Technique definition: An immunoenzyme test for the presence of drugs and other substances in urine and blood. The test uses enzyme linked antibodies that react only with the particular drug for which the sample is being tested.
EMIT definition: Immunoassay, enzyme-multiplied technique (EMIT)
Analyzers, Laboratory, Immunoassay, Chemiluminescent definition: Immunoassay analyzers that attach chemiluminescent substances (e.g., isoluminol, acridinium esters), which emit light at a particular wavelength during a chemical reaction, as a label to either an antigen or an antibody and then measure the concentration of the ligand (the substance being analyzed) in the specimen under analysis, using the result of the antigen-antibody reaction. These analyzers usually include an autosampler, a reagent dispenser, and a luminometer to detect and quantify photoelectrons. Chemiluminescent analyzers have better sensitivity than photometric or fluorimetric analyzers.
Analyzers, Laboratory, Immunoassay, Fluorimetric definition: Immunoassay analyzers that attach fluorescent substances, which emit light at a wavelength after they have absorbed light at a different particular wavelength (either natural substances or dyes), as a label to either an antigen or an antibody and then measure the concentration of the ligand (the substance being analyzed) in the specimen under analysis, using the result of the antigen-antibody reaction. These analyzers usually include an autosampler, a reagent dispenser, a light source (e.g., a tungsten-halogen lamp), a filter or monochromator, and a detection system (fluorometer or spectrofluorometer); some also include computerized data processing devices. Some fluorimetric immunoassay analyzers use rare earth (lanthanide) chelates and time-resolved procedures to overcome background fluorescence. Fluorimetric analyzers usually have better sensitivity and reagent stability and use shorter assay time than photometric devices. Fluorimetric analyzers can quantify cardiac glycosides, antiasthmatics, antibiotics, antineoplastics, anticonvulsants, antiarrhythmics, and hormones.
Analyzers, Laboratory, Immunoassay, Nephelometric definition: Immunoassay analyzers that use a dedicated nephelometer, which measures particulates suspended in liquid or gas, as detection system. These analyzers can be used to monitor immunoassays that produce antigen-antibody complexes (e.g., enzyme immunoassays) that are capable of scattering monochromatic light at a particular wavelength.
Reagents, Immunoassay, Control definition: Reagents consisting of substances of known concentrations that are assayed by the usual clinical laboratory methods and that resemble the unknown specimen. They are used for quality control in a diverse range of sensitive and specific clinical assays using immunochemical reactions (immunoassays) that are mostly used in the determination of components in human specimens. Reagents used for quality control may be either specific for some substance or more frequently appropriate for a whole set of similar substances (e.g., proteins, lipids).
Reagents, Immunoassay, Toxicology definition: Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., urine, serum, plasma) to determine either one or more of a group of drugs, such as acetaminophen, catecholamines, alcohol, and salicylates, that are the most common cause of human toxicities when taken in overdose and/or other chemical agents that are accidentally or intentionally ingested. Toxicology determinations are also performed using chromatographic assays that can measure the level of many drugs simultaneously.
ENZYME IMMUNOASSAY, DIPHENYLHYDANTOIN definition: A diphenylhydantoin test system is a device intended to measure diphenylhydantoin, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of diphenylhydantoin overdose and in monitoring levels of diphenylhydantoin to ensure appropriate therapy.
ENZYME IMMUNOASSAY, BARBITURATE definition: A barbiturate test system is a device intended to measure barbiturates, a class of hypnotic and sedative drugs, in serum, urine, and gastric contents. Measurements obtained by this device are used in the diagnosis and treatment of barbiturate use or overdose and in monitoring levels of barbiturate to ensure appropriate therapy.
ENZYME IMMUNOASSAY, PRIMIDONE definition: A primidone test system is a device intended to measure primidone, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of primidone overdose and in monitoring levels of primidone to ensure appropriate therapy.
ENZYME IMMUNOASSAY, OPIATES definition: An opiate test system is a device intended to measure any of the addictive narcotic pain-relieving opiate drugs in blood, serum, urine, gastric contents, and saliva. An opiate is any natural or synthetic drug that has morphine-like pharmocological actions. The opiates include drugs such as morphine, morphine glucoronide, heroin, codeine, nalorphine, and meperedine. Measurements obtained by this device are used in the diagnosis and treatment of opiate use or overdose and in monitoring the levels of opiate administration to ensure appropriate therapy.
ENZYME IMMUNOASSAY, METHADONE definition: A methadone test system is a device intended to measure methadone, an addictive narcotic pain-relieving drug, in serum and urine. Measurements obtained by this device are used in the diagnosis and treatment of methadone use or overdose and to determine compliance with regulations in methadone maintenance treatment.
ENZYME IMMUNOASSAY, AMPHETAMINE definition: An amphetamine test system is a device intended to measure amphetamine, a central nervous system stimulating drug, in plasma and urine. Measurements obtained by this device are used in the diagnosis and treatment of amphetamine use or overdose and in monitoring levels of amphetamine to ensure appropriate therapy.
ENZYME IMMUNOASSAY, ETHOSUXIMIDE definition: An ethosuximide test system is a device intended to measure ethosuximide, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of ethosuximide overdose and in monitoring levels of ethosuximide to ensure appropriate therapy.
ENZYME IMMUNOASSAY, PHENOBARBITAL definition: A phenobarbitol test system is a device intended to measure phenobarbital, an antiepileptic and sedative-hypnotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of phenobarbital use or overdose and in monitoring levels of phenobarbital to ensure appropriate therapy.
ENZYME IMMUNOASSAY, BENZODIAZIPINE definition: A benzodiazepine test system is a device intended to measure any of the benzodiazepine compounds, sedative and hypnotic drugs, in blood, plasma, and urine. The benzodiazepine compounds include chlordiazepoxide, diazepam, oxazepam, chlorzepate, flurazepam, and nitrazepam. Measurements obtained by this device are used in the diagnosis and treatment of benzodiazepine use or overdose and in monitoring levels of benzodiazepines to ensure appropriate therapy.
ENZYME IMMUNOASSAY, PROPOXYPHENE definition: A propoxyphene test system is a device intended to measure propoxyphene, a pain-relieving drug, in serum, plasma, and urine. Measurements obtained by this device are used in the diagnosis and treatment of propoxyphene use or overdose or in monitoring levels of propoxyphene to ensure appropriate therapy.
ENZYME IMMUNOASSAY, COCAINE definition: A cocaine and cocaine metabolite test system is a device intended to measure cocaine and a cocaine metabolite (benzoylecgonine) in serum, plasma, and urine. Measurements obtained by this device are used in the diagnosis and treatment of cocaine use or overdose.
ENZYME IMMUNOASSAY, LIDOCAINE definition: A lidocaine test system is a device intended to measure lidocaine, an antiarrythmic and anticonvulsant drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of lidocaine overdose or in monitoring levels of lidocaine to ensure appropriate therapy.
ENZYME IMMUNOASSAY, THEOPHYLLINE definition: A theophylline test system is a device intended to measure theophylline (a drug used for stimulation of the muscles in the cardiovascular, respiratory, and central nervous systems) in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of theophylline overdose or in monitoring levels of theophylline to ensure appropriate therapy.
ENZYME IMMUNOASSAY, CARBAMAZEPINE definition: A neuroleptic drugs radioceptor assay test system is a device intended to measure in serum or plasma the dopamine receptor blocking activity of neuroleptic drugs and their active metabolites. A neuroleptic drug has anti-psychotic action affecting principally psychomotor activity, is generally without hypnotic effects, and is a tranquilizer. Measurements obtained by this device are used to aid in determining whether a patient is taking the prescribed dosage level of such drugs.
REAGENT, IMMUNOASSAY, IGG definition: An immunoglobulin G (Fc fragment specific) immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the Fc (carbohydrate containing) fragment of immunoglobulin G (resulting from breakdown of immunoglobulin G antibodies) in urine, serum, and other body fluids. Measurement of immunoglobulin G Fc fragments aids in the diagnosis of plasma cell antibody-forming abnormalities, e.g., gamma heavy chain disease.
ENZYME IMMUNOASSAY, DIGOXIN definition: A digoxin test system is a device intended to measure digoxin, a cardiovascular drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of digoxin overdose and in monitoring levels of digoxin to ensure appropriate therapy.
ENZYME IMMUNOASSAY, N-ACETYLPROCAINAMIDE definition: A digoxin test system is a device intended to measure digoxin, a cardiovascular drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of digoxin overdose and in monitoring levels of digoxin to ensure appropriate therapy.
ENZYME IMMUNOASSAY, PROCAINAMIDE definition: A digoxin test system is a device intended to measure digoxin, a cardiovascular drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of digoxin overdose and in monitoring levels of digoxin to ensure appropriate therapy.
ENZYME IMMUNOASSAY, QUINIDINE definition: A digoxin test system is a device intended to measure digoxin, a cardiovascular drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of digoxin overdose and in monitoring levels of digoxin to ensure appropriate therapy.
ENZYME IMMUNOASSAY, GENTAMICIN definition: A gentamicin test system is a device intended to measure gentamicin, an antibiotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of gentamicin overdose and in monitoring levels of gentamicin to ensure appropriate therapy.
FLUORESCENT IMMUNOASSAY GENTAMICIN definition: A gentamicin test system is a device intended to measure gentamicin, an antibiotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of gentamicin overdose and in monitoring levels of gentamicin to ensure appropriate therapy.
FLUORESCENT IMMUNOASSAY, TOBRAMYCIN definition: A tobramycin test system is a device intended to measure tobramycin, an aminoglycoside antibiotic drug, in plasma and serum. Measurements obtained by this device are used in the diagnosis and treatment of tobramycin overdose and in monitoring levels of tobramycin to ensure appropriate therapy.
ENZYME IMMUNOASSAY, CANNABINOIDS definition: A cannabinoid test system is a device intended to measure any of the cannabinoids, hallucinogenic compounds endogenous to marihuana, in serum, plasma, saliva, and urine. Cannabinoid compounds include delta-9-tetrahydrocannabinol, cannabidiol, cannabinol, and cannabichromene. Measurements obtained by this device are used in the diagnosis and treatment of cannabinoid use or abuse and in monitoring levels of cannabinoids during clinical investigational use.
ENZYME IMMUNOASSAY, VALPROIC ACID definition: A neuroleptic drugs radioceptor assay test system is a device intended to measure in serum or plasma the dopamine receptor blocking activity of neuroleptic drugs and their active metabolites. A neuroleptic drug has anti-psychotic action affecting principally psychomotor activity, is generally without hypnotic effects, and is a tranquilizer. Measurements obtained by this device are used to aid in determining whether a patient is taking the prescribed dosage level of such drugs.
FLUORESCENT IMMUNOASSAY, THEOPHYLLINE definition: A theophylline test system is a device intended to measure theophylline (a drug used for stimulation of the muscles in the cardiovascular, respiratory, and central nervous systems) in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of theophylline overdose or in monitoring levels of theophylline to ensure appropriate therapy.
FLUORESCENT IMMUNOASSAY, DIPHENYLHYDANTOIN definition: A diphenylhydantoin test system is a device intended to measure diphenylhydantoin, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of diphenylhydantoin overdose and in monitoring levels of diphenylhydantoin to ensure appropriate therapy.
FLUORESCENT IMMUNOASSAY, PHENOBARBITAL definition: A phenobarbitol test system is a device intended to measure phenobarbital, an antiepileptic and sedative-hypnotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of phenobarbital use or overdose and in monitoring levels of phenobarbital to ensure appropriate therapy.
ENZYME IMMUNOASSAY, DIGITOXIN definition: A digitoxin test system is a device intended to measure digitoxin, a cardiovascular drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of digitoxin overdose and in monitoring levels of digitoxin to ensure appropriate therapy.
NEPHELOMETRIC INHIBITION IMMUNOASSAY, PHENOBARBITAL definition: A phenobarbitol test system is a device intended to measure phenobarbital, an antiepileptic and sedative-hypnotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of phenobarbital use or overdose and in monitoring levels of phenobarbital to ensure appropriate therapy.
NEPHELOMETRIC INHIBITION IMMUNOASSAY, DIPHENYLHYDANTOIN definition: A diphenylhydantoin test system is a device intended to measure diphenylhydantoin, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of diphenylhydantoin overdose and in monitoring levels of diphenylhydantoin to ensure appropriate therapy.
FLUORESCENT IMMUNOASSAY, PRIMIDONE definition: A primidone test system is a device intended to measure primidone, an antiepileptic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of primidone overdose and in monitoring levels of primidone to ensure appropriate therapy.
FLUORESCENCE POLARIZATION IMMUNOASSAY, TOBRAMYCIN definition: A tobramycin test system is a device intended to measure tobramycin, an aminoglycoside antibiotic drug, in plasma and serum. Measurements obtained by this device are used in the diagnosis and treatment of tobramycin overdose and in monitoring levels of tobramycin to ensure appropriate therapy.
FLUORESCENCE POLARIZATION IMMUNOASSAY, CARBAMAZEPINE definition: A neuroleptic drugs radioceptor assay test system is a device intended to measure in serum or plasma the dopamine receptor blocking activity of neuroleptic drugs and their active metabolites. A neuroleptic drug has anti-psychotic action affecting principally psychomotor activity, is generally without hypnotic effects, and is a tranquilizer. Measurements obtained by this device are used to aid in determining whether a patient is taking the prescribed dosage level of such drugs.
FLUORESCENCE POLARIZATION IMMUNOASSAY, AMIBACIN definition: An amikacin test system is a device intended to measure amikacin, an aminoglycoside antibiotic drug, in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of amikacin overdose and in monitoring levels of amikacin to ensure appropriate therapy.
FLUORESCENCE POLARIZATION IMMUNOASSAY, PHENOBARBITAL definition: A phenobarbitol test system is a device intended to measure phenobarbital, an antiepileptic and sedative-hypnotic drug, in human specimens. Measurements obtained by this device are used in the diagnosis and treatment of phenobarbital use or overdose and in monitoring levels of phenobarbital to ensure appropriate therapy.
FLUORESCENCE POLARIZATION IMMUNOASSAY, THEOPHYLLINE definition: A theophylline test system is a device intended to measure theophylline (a drug used for stimulation of the muscles in the cardiovascular, respiratory, and central nervous systems) in serum and plasma. Measurements obtained by this device are used in the diagnosis and treatment of theophylline overdose or in monitoring levels of theophylline to ensure appropriate therapy.
IMMUNOASSAY METHOD, TROPONIN SUBUNIT definition: A creatine phosphokinase/creatine kinase or isoenzymes test system is a device intended to measure the activity of the enzyme creatine phosphokinase or its isoenzymes (a group of enzymes with similar biological activity) in plasma and serum. Measurements of creatine phosphokinase and its isoenzymes are used in the diagnosis and treatment of myocardial
Immunoassay, qualitative, multiple step definition: Immunoassay, qualitative, multiple step
Immunoassay, qualitative, single step definition: Immunoassay, qualitative, single step
BIOSENSOR,IMMUNOASSAY,MYOGLOBIN definition: A myoglobin immunological test system is a device that consists of the reagents used to measure by immunochemical techniques the myoglobin (an oxygen storage protein found in muscle) in serum and other body fluids. Measurement of myoglobin aids in the rapid diagnosis of heart or renal disease.
Analyzers, Laboratory, Immunoassay definition: Laboratory analyzers used to identify and quantify specific substances, typically using an antibody (e.g., immunoglobulin) as a reagent to detect the substance (i.e., antigen, hapten) of interest. A label attached to the antibody or antigen permits detection of the binding compound. The specificity and high affinity of antibodies for specific antigens plus the ability of antibodies to cross-link antigens enable the identification and quantification of substances using a wide variety of methods. Dedicated immunoassay analyzers are usually used for heterogeneous immunoassay analysis, while homogeneous immunoassay analysis can be performed either in clinical chemistry laboratory analyzers or in dedicated immunoassay analyzers. Typical assays include antiarrhythmic, antibiotic, anticonvulsant, or cardiac glycoside drug concentration determination; endocrine hormone testing; and protein, viral, or bacterial toxin determinations.
Analyzers, Laboratory, Immunoassay, Photometric definition: Immunoassay analyzers that use a dedication filter photometer or spectrophotometer as a detection system. These analyzers usually include an autosampler, a reagent dispenser, a washer, a filter photometer or spectrophotometer as a detector, and, typically, computerized data processing devices. Photometric immunoassay analyzers can be used to monitor immunoassays that produce compounds that absorb monochromatic light.
Reagents, Immunoassay definition: Reagents intended for use in a diverse range of sensitive and specific clinical assays using immunochemical reactions (immunoassays). The specificity and high affinity of antibodies for specific antigens, coupled with the ability of antibodies to cross-link antigens, allows the identification and quantification of specific substances using a variety of methods. Some of these reagents are available in kits that include an antibody or antigen, calibrators, and other specific reagents (e.g., activator). Immunoassay reagents may be specific for one or many different types of assays, such as electrophoresis, nephelometry, or microtiter assays. They are used in a variety of tests to determine levels of proteins, hormones, drugs of abuse, and many other substances, facilitating the diagnosis of allergies, autoimmune diseases, tumors, and other conditions.
Reagents, Immunoassay, Allergy definition: Immunoassay reagents intended to perform qualitative and/or quantitative analyses of a sample of body fluids to determine either one or more in the group of glycoproteins that are normally attached to mast cells (i.e., Immunoglobulin E) or the vasoactive amines (e.g., histamines) that are released by mast cells when an antigen (allergen) cross-links two attached IgE molecules. These reagents are mostly used to characterize a patient's abnormal hypersensitivity to substances that are ordinarily harmless (allergens). Some reagents may be used to determine allergy mediators (e.g., leukotrienes, tryptase).
Reagents, Immunoassay, Anemia Test definition: Reagents, Immunoassay, Anemia Test: Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., serum, plasma, urine) to determine one or more of a group of substances present in the blood (e.g., erythropoietin, serum ferritin, folate) whose levels are usually changed in individuals with decreased erythrocyte count and/or hemoglobin level (i.e., anemia).
Reagents, Immunoassay, Autoimmune definition: Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., serum, urine, cerebrospinal fluid) to determine agents (e.g., antigens, antibodies) developed by the organism that cause an immune response against its own tissue constituents (I.e., autoimmune diseases). Autoimmune diseases may be systemic (e.g., lupus erythematosus, rheumatism) or specific against a particular organ (e.g., thyroid gland).
Reagents, Immunoassay, Calibration definition: Reagents intended to establish points of reference (i.e., calibrate) in a diverse range of sensitive and specific clinical assays using immunochemical reactions (immunoassays) that are mostly used to determine substances in human samples. Reagents used for calibration may be either specific for some particular substance or more frequently appropriate to calibrate a whole set of similar substances (e.g, proteins, lipids).
Reagents, Immunoassay, Therapeutic Drug definition: Immunoassay reagents intended to perform quantitative analyses on a body fluid sample (e.g., serum, urine) to identify and/or measure the levels of one or more of a group of chemical compounds administered to humans for diagnosis, treatment, or prevention of a disease or other abnormal condition or for the relief of pain (i.e., therapeutic drugs) present in the sample. These reagents are used in tests intended to monitor therapeutic drugs such as antibiotics, drugs for the cardiovascular and nervous systems, antiasthmatic drugs, antineoplastic drugs, immunosuppressants, and pain relievers.
Reagents, Immunoassay, Vitamin definition: Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., serum, urine) to determine one or more of a group of organic compounds (frequently described as coenzymes) (I.e., vitamins) required in trace amounts (microgram or milligram) in the daily diet for health, growth, and reproduction. Vitamins are classified in groups using capital letters (e.g., A, B, C), frequently followed by an Arabic number subscript; some vitamins are identified by common chemical names (e.g., folacin).
BIOSENSOR, IMMUNOASSAY, CPK OR ISOENZYMES definition: A creatine phosphokinase/creatine kinase or isoenzymes test system is a device intended to measure the activity of the enzyme creatine phosphokinase or its isoenzymes (a group of enzymes with similar biological activity) in plasma and serum. Measurements of creatine phosphokinase and its isoenzymes are used in the diagnosis and treatment of myocardial
ENZYME IMMUNOASSAY, CORTISOL, SALIVARY definition: A cortisol (hydrocortisone and hydroxycorticosterone) test system is a device intended to measure the cortisol hormones secreted by the adrenal gland in plasma and urine. Measurements of cortisol are used in the diagnosis and treatment of disorders of the adrenal gland.
Reagents, Immunoassay, Allergy, Histamine definition: Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (typically plasma or bronchial secretion) to determine the amine beta-imidazolylethylamine (histamine). Histamine is a powerful vasodilator causing a drop in blood pressure and constriction of the bronchial smooth muscles of the lungs. The determination of histamines is mostly used to characterize a patient's abnormal hypersensitivity to substances that are ordinarily harmless (allergens).
Reagents, Immunoassay, Allergy, Leukotriene definition: Immunoassay reagents intended to perform qualitative and/or quantitative analyses on a body fluid sample (e.g., plasma) to determine a group of biologically active substances mostly found in leukocytes (i.e., leukotrienes) that cause bronchial and other smooth muscle contractions. Leukotrienes are identified by letters from A to E, followed by numbers that identify the quantity of double bounds in the molecule. Some leukotrienes (e.g., LTC4, LTD4, LTE4) are considered mediators of bronchial constriction and allergic reactions (e.g., allergic rhinitis, asthma). Reagents for leukotriene determination are mostly used in provocation tests (e.g., determination of LTC4 in nasal secretions after inhaling allergens); these reagents may also be used for monitoring severity and improvements in asthma attacks (e.g., LTE4 in urine) and to determine LTC4 release for venom (e.g., hymenoptera venom) allergy diagnosis.
Reagents, Immunoassay, Rapid Test definition: Immunoassay reagents designed to perform tests on a body fluid sample, usually whole blood, in a short period of time (i.e., rapid tests), typically several minutes. These reagents are mostly used in point-of-care assays or less frequently in tests performed at home by healthcare providers; some of them are available in kits that include an antibody or antigen, a calibrator, and other specific (e.g., activator) reagents.
IgE immunoassay antibody definition: Immunoassay, IgE Antibody Test
Microparticle enzyme immunoassay (MEIA) definition: Immunoassay, Microparticle Enzyme