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Which of the following best reflects the discrepancy seen in a sample demonstrating the acquired-B-like phenomenon?

A Kleihauer-Betke acid-elution test is performed to determine the dosage of Rh-immune globulin (RhIg). Out of 2,000 cells that were counted, 43 of them appeared to contain fetal hemoblobin. It is the transfusion services policy  to add one more dose on to the calculated number. How many doses of RhIg should this woman receive?

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?

In which of the following situations would the administration of Rh-immune globulin (RhIg) NOT be indicated? None of the women has received antenatal RhIg.

In the direct (DAT) and indirect (IAT) antiglobulin techniqes, false negative reactions may result if the:

Blood selected for an exchange transfusion must:

The test for weak D is perfomed by incubating patient’s red cells with:

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:

A crossmatch and screen cells are 2+ at immediate spin, 1+ at 37 degrees C and negative with AHG. Identify the most likely problem.

An unexplained fall in hemoglobin and mild jaundice in a patient transfused with red blood cells 1 week ago would most likely indicate: