direct antiglobulin test

direct

without intervening steps.

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direct antiglobulin test

see direct coombs test.

direct capture ELISA mastitis test

measures polymorphonuclear antigens in milk sample as an indication of elevated milk cell counts and therefore presence of mastitis.

direct contact

see direct contact.

direct costs

see variable costs.

direct effect

the effect of one variable on another without passing through a third variable.

direct immunofluorescence testing

see fluorescence microscopy.

direct oxidative pathway

see pentose phosphate pathway.

direct relationship

see direct relationship.

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direct antiglobulin test

Direct Coombs test Immunology A test to detect immune hemolysis caused by binding of Ig and/or complement components to RBCs after sensitization to an antigen–eg Rh factor–on the RBC surface; a DAT helps differentiate autoimmune and 2º immune hemolytic anemia, which can be drug-induced or associated with underlying disease such as lymphoma. See Indirect antiglobulin test.