HEMOLITIČKA BOLEST NOVOROĐENČETA: DIREKTNI COOMBS TEST

Positive direct Coombs test induced by phenylhydrazine.

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 ...

Anemia with positive direct Coombs' test induced by trypan blue.

as evidence of autoimmune phenomena. The experimental production of positive antiglobulin tests by drugs and chemical agents, however, has suggested that nonimmunologic mechanisms may also be responsible for protein coating of erythrocytes.2’3 During attempts to produce tumors of the reticuloendothelial system in rats by injection of trypan blue, an anemia, chacacterized by increased ervthrocyt...

Factors affecting the speed of agglutination in the Coombs test.

The Coombs test (Coombs, Mourant, and Race, 1945a, 1945b, 1946) has become popular as a sensitive and reliable method of detecting incomplete antibodies. The essential reagent is the serum of an animal (usually a rabbit) which has been immunized with human globulin. Potent rabbit sera sometimes show a prozone phenomenon (Wootton, 1950; Van Loghem, Kresner, Coombs, and Fulton Roberts, 1950). The...

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 ...