antiglobulin test

antiglobulin test
(AGT) a test for the presence of nonagglutinating antibodies against red blood cells, using antihuman globulin antibody to agglutinate cells coated with the nonagglutinating antibody. The direct antiglobulin test detects antibodies bound to circulating red cells in vivo. It is used in the evaluation of autoimmune and drug-induced immune hemolytic anemia and erythroblastosis fetalis. The indirect antiglobulin test detects serum antibodies that bind to red cells in an in vitro incubation step. It is used in typing of erythrocyte antigens and in compatibility testing (cross-match). Called also Coombs t.

Medical dictionary. 2011.

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  • Antiglobulin test — An antiglobulin test is a laboratory test to identify antibodies that can bind to the surface of red blood cells or platelets and destroy them. This test is used to diagnose certain blood disorders in which patients make antibodies to their own… …   Wikipedia

  • antiglobulin test — A laboratory test to identify antibodies that can bind to the surface of red blood cells or platelets and destroy them. This test is used to diagnose certain blood disorders in which patients make antibodies to their own red blood cells or… …   English dictionary of cancer terms

  • direct antiglobulin test — direct Coombs test see antiglobulin t …   Medical dictionary

  • indirect antiglobulin test — indirect Coombs test see antiglobulin t …   Medical dictionary

  • antiglobulin consumption test — a test for serum antibodies against cellular antigens. Cells are incubated with the serum sample and then with antiglobulin; any serum antibody that binds to the cells will take up antiglobulin. The amount of antiglobulin consumed is determined… …   Medical dictionary

  • test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

  • antiglobulin — an·ti·glob·u·lin .ant i gläb yə lən, .an .tī n an antibody that combines with and precipitates globulin * * * an·ti·glob·u·lin (anґtĭ glob″u lin) an antibody directed against gamma globulin; see also under test …   Medical dictionary

  • Coombs test — Diagnostics MeSH D003298 Coombs test (also known as Coombs test, antiglobulin test or AGT) refers to two clinical blood tests used in immunohematology and immunology. The t …   Wikipedia

  • antihuman globulin (AHG) test — direct antiglobulin test; see antiglobulin test …   Medical dictionary

  • Coombs test — kümz n an agglutination test used to detect proteins and esp. antibodies on the surface of red blood cells Coombs Robert Royston Amos (b 1921) British immunologist. Coombs, along with A. E. Mourant and R. R. Race, devised in 1945 the test now… …   Medical dictionary

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