CLS 422 Clinical Immunohematology I Take Home Quiz Day Two ...

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17. When performing the antibody screen using the gel technique, the following pattern is obtained: I II III How would you report these results? a. Inconclusive b. Negative c. Negative, positive, positive d. Positive e. Positive, negative, negative 18. What is the proper interpretation of these results? IS 37 AHG CC I 0 0 0 2+ II 0 0 0 0 III 0 0 0 2+ a. Inconclusive b. Negative c. Positive 19. Which test would be performed in order to detect in vivo sensitization of red blood cells? a. ABO/Rh b. Antibody screen c. DAT d. Weak D test CLS 422 Clinical Immunohematology I Page 4 of 6 Student Lab Day Two Take Home Quiz
20. The main difference between the direct antiglobulin test (DAT) and the indirect antiglobulin test (IAT) is: a. Sensitization takes place in the test system in the indirect antiglobulin test and in the body in the DAT. b. Specimen for the DAT is either the patient’s cells or serum whereas the IAT only uses the patient’s serum. c. The IAT detects only IgG antibodies whereas the DAT detects IgG and complement. d. Use of enhancement reagents is required in the IAT but not in the DAT. 21. Which of the following specimens is the best to use for a direct antiglobulin test? a. Clot tube with gel separator b. Clot tube, no gel, stored overnight at 1-6C c. EDTA d. Any plasma specimen will work equally well. 22. When investigating a positive DAT, it is important to get an accurate patient history which includes: (More than one correct answer) a. ABO & Rh b. Diagnosis c. Medications d. Transfusions 23. In a hemolytic transfusion reaction, the patient has: a. An allergy to a protein in the donor plasma. b. Bacteria in the blood stream, due to contamination of donor blood. c. An antibody directed against antigens on the donor’s leukocytes. d. An antibody directed against antigens on the donor’s red blood cells. 24. In Hemolytic Disease of the Fetus and Newborn (HDFN), a positive DAT indicates that the: a. Infant’s RBCs are coated with maternal antibody. b. Mother’s RBCs are coated with fetal antibody. c. Infant’s RBCs are coated with paternal antibody. d. Mother’s RBCs are in the infant’s circulation. CLS 422 Clinical Immunohematology I Page 5 of 6 Student Lab Day Two Take Home Quiz
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CLS 422 Clinical Immunohematology I Take Home Quiz Day Two ...

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