Test
Immunohematology Quiz 4
Preguntas del test (16)
1What is the purpose of Coombs control cells?
- ATo ensure that AHG tests with negative results are not the false negatives
- BTo ensure that washing removed all unbound antibody
- CTo ensure that AHG was not omitted or inactivated
- DAll of the above
2What is a positive DAT?
- AIn vitro sensitization of RBC with antigen
- BIn vitro sensitization of RBC with antibody
- CIn vivo sensitization of RBC with antibody
- DIn vivo sensitization of RBC with antigen
3A positive autocontrol in antibody detection procedures is usually indicative of:
- AInadequate washing
- BPositive DAT
- CPositive IAT
- Dtwo of the above
4Why is it important to match the lot number on the panel cells?
- AThe ABO group will change from lot to lot
- BPattern of reactions will change from lot to lot
- CIt is a requirement of the FDA
- DAll of the above
5In interpreting an antibody screen, which of the following questions might be asked to decipher the class of antibody?
- AIs the autologous control positive or negative?
- BIs hemolysis present?
- CIn what phase did the reaction occur?
- DIs rouleaux present?
6What is an elution?
- Aa technique used to dissociate IgM antibodies from sensitized RBCs
- Ba technique used to dissociate IgG antibodies from sensitized RBCs
- Ca technique used to reduce the zeta potential enhancing antigen binding
- Dnone of the above
7What is tested in an antibody screen?
- APatient red cells are tested against group O reagent screening cells
- BPatient serum is tested against group AB reagent screening cells
- CPatient serum is tested against group O reagent screening cells
- DPatient serum is tested against group A reagent screening cells
8What might a positive antibody screen and a negative autocontrol indicate?
- AAn alloantibody is coating donor cells after a transfusion
- BAn autoantibody has been detected
- CAn alloantibody has been detected
- DDrug-induced antibody reacting with patient cells.
9When might you suspect multiple antibodies in a patient's serum?
- APattern of reactivity not fitting a single antibody
- BVariation in phase of reactivity
- CVariation in antibody reactivity strength
- DAll of the above
10One drop of Coombs control cells was added to a negative antibody screen. No agglutination was observed after centrifugation. What course of action is taken?
- AReport negative result
- BReport inconclusive result
- CRepeat the test
- DAdd one more drop of check cells and recentrifuge
11What is the shipping temp requirement for plasma?
- A1 to 6 degree F
- B1 to 6 degree C
- C-18 or higher degree F
- D-18 or lower degree C
12Which of the following may not be used as a patient identifier?
- APatient's full name
- BPatients date of birth
- CPatients medical record number
- DPatients room number
13Which of the following is not an enhancement media?
- AAlbumin
- BLow Ionic Strength Solution (LISS)
- CNormal Saline
- DPolyethylene glycol
14Additive solutions are approved for storage of red blood cells for how many days?
- A21
- B42
- C35
- D7
15What is the current storage time and storage temp for platelet concentrates and apheresis platelet components?
- A5 days at 1 to 6 degrees C
- B5 days at 24 to 27 degrees C
- C5 days at 20 to 24 degrees C
- D7 days at 22 to 24 degrees C
16Whole blood and RBC units are stored at what temperature?
- A1 to 6 C
- B20 to 24 C
- C37 C
- D24 to 27 C
Información
- Descripción
- As prep for exam 2
- Autor
- Michelle Rondeau
- Idioma
- English
- Visitas
- 1.900
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