Definition of blood test
Nouns
a serologic analysis of a sample of blood
- Types:
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agglutination test
a blood test used to identify unknown antigens; blood with the unknown antigen is mixed with a known antibody and whether or not agglutination occurs helps to identify the antigen; used in tissue matching and blood grouping and diagnosis of infections
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heterophil test
a blood test to detect heterophil antibodies that agglutinate sheep red blood cells; positive result indicates infectious mononucleosis
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Widal test, Widal's test
a test for detecting typhoid fever and other salmonella infections
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complement fixation test
a blood test in which a sample of serum is exposed to a particular antigen and complement in order to determine whether or not antibodies to that particular antigen are present; used as a diagnostic test
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Wasserman reaction, Wassermann, Wassermann test
a blood test to detect syphilis; a complement fixation test is used to detect antibodies to the syphilis organism treponema; a positive reaction indicates the presence of antibodies and therefore syphilis infection
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PSA blood test
a blood test that measures levels of a protein called prostate specific antigen that is manufactured exclusively by the prostate gland; men with prostate problems usually have elevated levels of PSA
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biopsy
examination of tissues or liquids from the living body to determine the existence or cause of a disease