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Related to hemagglutination inhibition test: hemagglutination test


agglutination of erythrocytes.
hemagglutination inhibition (HI, HAI) test
1. a highly sensitive procedure for the measurement of soluble antigens in biologic specimens; the amount of hemagglutination reflects the amount of free antibody present after reaction with the specimen and thus varies inversely with amount of antigen in the specimen.
2. a procedure for the measurement of serum antibodies directed against a hemagglutinating virus; the highest dilution of serum that completely inhibits hemagglutination by a standardized viral preparation is reported as the hemagglutination titer.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


The agglutination of red blood cells; may be immune as a result of specific antibody either for red blood cell antigens themselves or other antigens that coat the red blood cells, or may be nonimmune as in hemagglutination caused by viruses or other microbes.
Synonym(s): hemoagglutination
Farlex Partner Medical Dictionary © Farlex 2012


The agglutination of red blood cells; may be immune (as a result of specific antibody to red blood cell antigens or other antigens that coat the red blood cells), or nonimmune (as in hemagglutination caused by viruses or other microbes).
Synonym(s): haemagglutination.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012


The clumping or clustering of red blood cells caused by certain viruses, antibodies, or other substances.
Mentioned in: Rubella Test
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Agents were confirmed to be type A influenza viruses by a commercial rapid antigen assay kit and were excluded from being Newcastle disease virus by the hemagglutination inhibition test with Newcastle-specific antiserum.
A serologic study, which used the hemagglutination inhibition test, of animals living permanently in northern Greece showed that 16.8% of goats, 5.6% of pigs, 5.1% of sheep, 4.7% of horses, and 3.1% of cattle had antibodies to TBE virus (7).
Measurement of antibodies to avian influenza virus A (H7N7) in humans by hemagglutination inhibition test. J Virol Methods.
Louis encephalitis virus; Ig, immunoglobin; G-E, recombinant domain III of E protein; PRNT, plaque reduction neutralization test; HI, hemagglutination inhibition test. Table 2.
Identification of the strains LEIV 27889 Vlgand Ast 986 by hemagglutination inhibition test with immune ascitic fluid and antigens of flaviviruses Viral antigens(a) 27889 AST LEIV LEIV LEIV IAF of viruses Vlg 986 Az-1640 Az-72 Az-1628 LEIV Az-1640 320(b) nt 1280 160 nt LEIV Az-72 80 nt 160 160 nt LEIV Az-1628 nt 640 nt nt 1280 Japanese encephalitis 160 320 320 160 160 Kokobera 160 nt 320 160 nt St.

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