Direct antiglobulin test (DAT) detects sensitization that occurred in which location?

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Multiple Choice

Direct antiglobulin test (DAT) detects sensitization that occurred in which location?

The Direct antiglobulin test shows whether red blood cells have antibodies or complement bound to their surface inside the patient’s body. This binding happens in vivo during an immune reaction, so a positive DAT indicates in vivo sensitization of the RBCs. The test then uses anti-human globulin to detect that bound material on the cells. This is different from the indirect antiglobulin test, which looks for antibodies in the serum that could react with red cells in vitro. So, the DAT specifically reflects sensitization that occurred in vivo, not something created in the lab.

The Direct antiglobulin test shows whether red blood cells have antibodies or complement bound to their surface inside the patient’s body. This binding happens in vivo during an immune reaction, so a positive DAT indicates in vivo sensitization of the RBCs. The test then uses anti-human globulin to detect that bound material on the cells. This is different from the indirect antiglobulin test, which looks for antibodies in the serum that could react with red cells in vitro. So, the DAT specifically reflects sensitization that occurred in vivo, not something created in the lab.

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