Ch 6 rh blood group system Questions and Answers

Select the true statement regarding Rh antibodies. a. Are not red cell stimulated b. Cannot cross the placenta c. React best at room temperature d. Usually are IgG - Correct Answer D How is the Rh genotype cDe/CDe written in Wiener notation? a. R0R1 b. RyR2 c. RzR2 d. R2R1 - Correct Answer A The following results were obtained on a donor's blood sample: Anti-A + RBCs 0 Anti-B + RBCs 4+ Anti-D + RBCs 0 Weak D test 0 (Check cells 2+) How will the unit be labeled? a. Group B, D-positive b. Group B, D-negative c. Group O, D-negative d. Group A, D-positive - Correct Answer B What is the mode of Rh antigen inheritance? a. One single locus and one gene inherited b. Three loci and three genes inherited c. Two loci and two genes inherited d. Conjugated regulated gene - Correct Answer C What is the purpose of the Rh control in routine Rh typing? a. Confirms that anti-D is specific for D antigen b Ensures that anti-D is active c. Confirms that patient's serum does not contain anti-D d. Detects polyagglutination or spontaneous agglutination - Correct Answer D If the patient has a positive DAT, can you perform a weak D test on the red cells? a. Yes, there will be no interference with the test.