DAT ( Direct Antiglobulin Test ).
When AHG or Coombs serum is used to demonstrate that red cells are antibody coated in vivo, the procedure is termed:
1+ reaction has numerous small clumps and cloudy red supernatant
2+ has many medium-sized clumps and clear supernatant.
3+ has several large clumps and clear supernatant
4+ has one solid clump, no free cells, and clear supernatant
BB
Tube-based agglutination reactions in blood bank are graded from negative (0) to 4+. A reaction that has numerous small clumps in a cloudy, red background is:
The division of Department of Health and Human Services (DHHS) responsible for protecting public health by ensuring the safety and efficacy of foods, drugs, biological products, medical devices, and cosmetics is:
If Kappa or Lambda is predominant and CD5 is co-expressed with CD19 (CD19/CD5 dual positive lymphocyte population), and CD23 is expressed, chronic lymphocytic leukemia is a probable diagnosis. CD19 is normally found on normal B cell populations and CD5 is normally found on mature T cell populations. However, CD5 is present on B cells in B-chronic lymphocytic leukemia or Mantle Cell Lymphoma, both abnormal B cell malignant processes.
CD23 expression is not consistent with Mantel cells as shown on the decision tree on the right.
A monoclonal B-cell population (Kappa or Lambda predominant) with expression of CD19, CD20, CD23, and co-expression of CD5 is consistent with which of the following?
TESTED 22 Dec 2024
