A technologist obtained the following results on a patient sample: The technologist washed the patient’s cells with saline, and repeated the forward typing. A saline replacement tecnique was used with the reverse typing. The following results were obtained: Anti-A Anti-B Anti-A,B A1 Cells B Cells Original Results 4+ 3+ 4+ 2+ 4+ Results after washing patient’s cells and saline replacement 4+ 0 4+ 0 4+ The results are consistent with:

Inhibition testing can be used to confirm antibody specificity for which of the following antibodies?

Five days after transfusion, a patient becomes mildly jaundiced and experiences a drop in hemoglobin and hematocrit with no apparent hemorrhage. Below are the results of the transfusion reaction workup. In order to reach a conclusion, the technologist should first Anti-A Anti-B Anti-D A1 Cells B Cells Ab Screen DAT Patient Pretransfusion 0 4+ 3+ 4+ 0 0 0 Patient Posttransfusion 0 4+ 3+ 4+ 0 1+ 1+ Donor #1 0 0 3+ Donor #2 0 4+ 3+

An Rh negative donor who tests positive at AHG with anti-D would be labeled as:

The LW antigen is associated with the Rh system in what way?

Blood selected for an exchange transfusion must:

The phenomenon of an Rh-positive person whose serum contains anti-D is best explained by:

The medical laboratory scientist has recently been promoted to a supervisory position in the transfusion service of a small rural hospital. He feels that the optimal blood in inventory should be reviewed. The data for the previous 3 months of group A, Rh-positive blood usage are given below. Week Usage   Week Usage 1 2   7 11 2 2   8 3 3 1   9 2 4 3   10 1 5 1   11 2 6 3   12 2 Assuming that these data are representative of a 6-month period, what should the optimal inventory of A-positive units be for this institution if calculated by average weekly use?

Below are the Rh phenotypes of 4 donor units. If a patient has anti-e in the serum, which of the units of red cells may he or she receive without expecting a reaction due to this antibody?

A group A recipient requires a transfusion of 2 units of frozen plasma. Which of the following types are appropriate to select for transfusion?