A group of a2-globulins in human serum, so called because of their ability to combine with hemoglobin, preventing loss in the urine; variant types form a polymorphic system, with a- and ß-polypeptide chains controlled by separate genetic loci. Levels are decreased in hemolytic disorders and increased in inflammatory conditions or with tissue damage.
[G. hapto, to grasp, + hemoglobin]
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.