The Indirect Antiglobulin (Coombs’) Test Is Specific but Less Sensitive Than the Direct Antiglobulin Test for Detecting Anti-Erythrocytic Autoantibodies and Thereby Immune-Mediated Hemolytic Anemia in Dogs

Direct antiglobulin ("Coombs") test-negative autoimmune hemolytic anemia: a review.

We have reviewed the literature to identify and characterize reports of warm-antibody type, autoimmune hemolytic anemia in which the standard direct antiglobulin reaction was negative but a confirmatory test indicated that the red cells were opsonized with antibody. Three principal reasons account for the absence of a positive direct antiglobulin test in these cases: a) IgG sensitization below ...

The Direct Antiglobulin (coombs) Test in Megaloblastic Anaemia.

Folic acid deficiency with the picture of a megaloblastic bone marrow may develop in haemolytic anaemia, and, on the other hand, both vitamin B(12) and folic acid deficiency may produce signs of haemolysis. As the correct interpretation of a positive antiglobulin reaction associated with megaloblastic erythropoiesis is particularly important, the effect of deficiency of vitamin B(12) and folic ...

Acquired hemolytic anemia, with special reference to the antiglobulin (Coombs') reaction.

Efficacy of Microtiter Method of Direct Antiglobulin Test in diagnosis of Immune Mediated Haemolytic Anaemia in Dogs

The present study was carried out to assess the efficacy of microtiter method of direct antiglobulin test in diagnosis of Immune Mediated Haemolytic Anaemia in Dogs. Two hundred and fifty eight anaemic dogs with pale/icteric mucous membrane were used for the present study. Initial screening of these dogs was done with saline agglutination test. Forty seven dogs were found positive for saline ag...

Relative sensitivity of direct antiglobulin test, antibody's elution and flow cytometry in the serologic diagnosis of immune hemolytic transfusion reactions.

BACKGROUND AND OBJECTIVE Current immunohematology practice dictates that serologic diagnosis of immune hemolytic transfusion reactions (IHTR) is based on the finding of a positive post-transfusion direct antiglobulin test (DAT). However, since DAT may fail to detect antibody-coated cells when they constitute a minor population amid a large number of non-sensitized ones, we investigated whether ...