Author: Anonymous

The forward grouping of a patient showed no agglutination of patient cells with anti-A or anti-B reagent antisera. The reverse grouping showed agglutination with A1 and B cells. What is this person’s ABO group?

Of the following antibodies, which is primarily IgG and is considered clinically significant in terms of HDN?

An antibody demonstrating dosage would mean that:

The Xga antigen is unique in that:

The use of the computer crossmatch is restricted to

A patient was phenotyped for the presence of Lewis antigens. A 3+ reaction was observed when patient cells were incubated with anti-Lea. No reaction was observed with anti-Leb. Based on these results, the patient’s phenotype is _____________ and the patient is a ____________ of ABH substances.

Persons who are negative for Duffy antigens are less likely to contract which of the following diseases?

Which of the following antibodies could possibly be present even if the patient does not have a previous transfusion history?

An antibody screen is performed, and all three tubes are negative on interpretation at AHG. Check cells are added, and the tubes are centrifuged. Agglutination was present after the addition of check cells. How should the AbSc results be reported?

IgM antibodies, if present, will react best during this phase of testing: