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Blood Bank Final Exam| questions and answers| multiple choice with correct answers given/verified 100%

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Blood Bank Final Exam| questions and answers| multiple choice with correct answers given/verified 100% Blood Bank Final Exam| questions and answers| multiple choice with correct answers given/verified 100% Which of the following is the most common cause of a false negative antibody screen or ID test? a. Forgetting to add AHG b. Using AHG that is expired c. Inadequate washing d. A positive autocontrol - correct answer-C What are check cells (aka Coombs control cells)? a. D positive cells coated with anti-D antibodies b. D negative cells coated with anti-D antibodies c. Type O, D positive cells coated with AHG d. Type O, D negative cells coated with AHG - correct answer-A Which of the following identifies all the testing that must be performed on a transfusion recipient? a. ABO and Rh typing, weak D if D negative, IAT Antibody screen, crossmatch b. ABO and Rh typing, IAT antibody screen, crossmatch c. ABO and Rh typing, weak D if D negative, transfusion transmitted disease testing d. ABO and Rh typing, IS crossmatch only - correct answer-B What can it mean if the autocontrol in an antibody test is positive? a. That they must have an alloantibody present on their own red cells b. That they must have an autoantibody present on their own red cells c. That they must be having a transfusion reaction and have alloantibodies attached to the donor red cells. d. That they either have an autoantibody present or they have been recently transfused and have alloantibodies attached to the donor red cells - correct answer-D Why should some panel cells that are heterozygous for an antigen not be crossed out when the reaction with that cell is negative? a. The antibody may not react with such a cell b. Because they have a double dose of the antigen c. Because you only cross out with positive cells d. Because you shouldn't have any heterozygous cells in your panel - correct answer-A What is the "rule of 3"? a. You must check your work 3 times before reporting it out b. Three cells that are positive react, you have a negative autocontrol, and you have a pattern match c. Three cells that are negative don't react, you have a negative autocontrol, and you have a pattern match. d. Patient plasma is positive with 3 cells with the antigen and negative with 3 cells without the antigen - correct answer-D What should you do next if the rule of three is not satisfied? a. Do the test over again b. Report it out with a statement that the rule of 3 was not met c. Don't worry about it. The rule of 3 is just a suggestion. d. Check your screening cells for any cells you need to meet the rule of 3 - correct answer-D You have added reagent antibody of the suspected in vivo antibody to the patients RBCS. What type of reaction do you expect and why? a. Negative reaction because you don't make an antibody to an antigen that you have. b. Positive reaction because what happens in vivo happens in vitro c. Negative reaction because you need to add donor cells to get a positive reaction d. Positive reaction because the reagent antibody is an IgM - correct answer-A What does ZZAP reagent do? a. Denatures the Kx antigen b. Denatures the K antigen c. Enhances the Kx antigen d. Enhances the K antigen - correct answer-B Which of the following groups of antigens are destroyed by enzymes? a. Rh, Kidd, Lewis b. I and P c. M, N, S, Duffy d. Jka, Jkb and Jsa, Jsb - correct answer-C What substance could you use to neutralize an anti-I? a. Breast milk b. Soluble antigen in plasma and saliva c. Hydatid cyst fluid d. Guinea pig urine - correct answer-A What do sulfhydryl reagents do? a. Destroy antigens b. Cleave IgG antibody off of cells c. Destroy antibody d. Cleave the disulfide bonds of IgM - correct answer-D What type of cells should be included in a mini-cold panel if a group O person is suspected of having an anti-I? a. O panel cells b. Adult little i cells c. A1 and A2 cells d. Cord cells - correct answer-D Which of the following techniques can be most useful when you have a positive DAT (direct antiglobulin test) and you want to identify the antibody? a. Neutralization b. Elution c. Absorption d. Screen - correct answer-B You would perform a DAT in all the following scenarios except which one? a. Positive anti

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Blood Bank Final Exam| questions and a
os os os os os os




nswers| multiple choice with correct ans
os os os os os




wers given/verified 100%
os os




WhichosofostheosfollowingosisostheosmostoscommonoscauseosofosaosfalseosnegativeosantibodyosscreenosorosIDostest?

a.osForgettingostoosaddosAHG

b.osUsingosAHGosthatosisosexpired

c.osInadequateoswashing

d.osAospositiveosautocontrolos-oscorrectosanswer-C

Whatosareoscheckoscellsos(akaosCoombsoscontroloscells)?

a.osDospositiveoscellsoscoatedoswithosanti-Dosantibodies

b.osDosnegativeoscellsoscoatedoswithosanti-Dosantibodies

c.osTypeosO,osDospositiveoscellsoscoatedoswithosAHG

d.osTypeosO,osDosnegativeoscellsoscoatedoswithosAHGos-oscorrectosanswer-A

Whichosofostheosfollowingosidentifiesosallostheostestingosthatosmustosbeosperformedosonosaostransfusionosrecipient
?

a.osABOosandosRhostyping,osweakosDosifosDosnegative,osIATosAntibodyosscreen,oscrossmatch

b.osABOosandosRhostyping,osIATosantibodyosscreen,oscrossmatch

c.osABOosandosRhostyping,osweakosDosifosDosnegative,ostransfusionostransmittedosdiseaseostesting

d.osABOosandosRhostyping,osISoscrossmatchosonlyos-oscorrectosanswer-B

Whatoscanositosmeanosifostheosautocontrolosinosanosantibodyostestosisospositive?

a.osThatostheyosmustoshaveosanosalloantibodyospresentosonostheirosownosredoscells

b.osThatostheyosmustoshaveosanosautoantibodyospresentosonostheirosownosredoscells

c.osThatostheyosmustosbeoshavingosaostransfusionosreactionosandoshaveosalloantibodiesosattachedostoosthe

donorosredoscells.

d.osThatostheyoseitheroshaveosanosautoantibodyospresentosorostheyoshaveosbeenosrecentlyostransfused

andoshaveosalloantibodiesosattachedostoostheosdonorosredoscellsos-oscorrectosanswer-D

,Whyosshouldossomeospaneloscellsosthatosareosheterozygousosforosanosantigenosnotosbeoscrossedosoutoswhenosthe

reactionoswithosthatoscellosisosnegative?

a.osTheosantibodyosmayosnotosreactoswithossuchosaoscell

b.osBecauseostheyoshaveosaosdoubleosdoseosofostheosantigen

c.osBecauseosyouosonlyoscrossosoutoswithospositiveoscells

d.osBecauseosyouosshouldn'toshaveosanyosheterozygousoscellsosinosyourospanelos-oscorrectosanswer-A

Whatosisostheos"ruleosofos3"?

a.osYouosmustoscheckosyourosworkos3ostimesosbeforeosreportingositosout

b.osThreeoscellsosthatosareospositiveosreact,osyouoshaveosaosnegativeosautocontrol,osandosyouoshaveosa

patternosmatch

c.osThreeoscellsosthatosareosnegativeosdon'tosreact,osyouoshaveosaosnegativeosautocontrol,osandosyouoshave

aospatternosmatch.

d.osPatientosplasmaosisospositiveoswithos3oscellsoswithostheosantigenosandosnegativeoswithos3oscells

withoutostheosantigenos-oscorrectosanswer-D

Whatosshouldosyouosdoosnextosifostheosruleosofosthreeosisosnotossatisfied?

a.osDoostheostestosoverosagain

b.osReportositosoutoswithosaosstatementosthatostheosruleosofos3oswasosnotosmet

c.osDon'tosworryosaboutosit.osTheosruleosofos3osisosjustosaossuggestion.

d.osCheckosyourosscreeningoscellsosforosanyoscellsosyouosneedostoosmeetostheosruleosofos3os-oscorrectosanswer-D

YouoshaveosaddedosreagentosantibodyosofostheossuspectedosinosvivoosantibodyostoostheospatientsosRBCS.osWhat

typeosofosreactionosdoosyouosexpectosandoswhy?

a.osNegativeosreactionosbecauseosyouosdon'tosmakeosanosantibodyostoosanosantigenosthatosyouoshave.

b.osPositiveosreactionosbecauseoswhatoshappens

inosvivooshappensosinosvitro

c.osNegativeosreactionosbecauseosyouosneedostoosaddosdonoroscellsostoosgetosaospositiveosreaction

d.osPositiveosreactionosbecauseostheosreagentosantibodyosisosanosIgMos-oscorrectosanswer-A

WhatosdoesosZZAPosreagentosdo?

a.osDenaturesostheosKxosantigen

b.osDenaturesostheosKosantigen

,c.osEnhancesostheosKxosantigen

d.osEnhancesostheosKosantigenos-oscorrectosanswer-B

Whichosofostheosfollowingosgroupsosofosantigensosareosdestroyedosbyosenzymes?

a.osRh,osKidd,osLewis

b.osIosandosP

c.osM,osN,osS,osDuffy

d.osJka,osJkbosandosJsa,osJsbos-oscorrectosanswer-C

Whatossubstanceoscouldosyouosuseostoosneutralizeosanosanti-I?

a.osBreastosmilk

b.osSolubleosantigenosinosplasmaosandossaliva

c.osHydatidoscystosfluid

d.osGuineaospigosurineos-oscorrectosanswer-A

Whatosdoossulfhydrylosreagentsosdo?

a.osDestroyosantigens

b.osCleaveosIgGosantibodyosoffosofoscells

c.osDestroyosantibody

d.osCleaveostheosdisulfideosbondsosofosIgMos-oscorrectosanswer-D

Whatostypeosofoscellsosshouldosbeosincludedosinosaosmini-coldospanelosifosaosgrouposOospersonosisossuspectedosof

havingosanosanti-I?

a.osOospaneloscells

b.osAdultoslittleosioscells

c.osA1osandosA2oscells

d.osCordoscellsos-oscorrectosanswer-D

WhichosofostheosfollowingostechniquesoscanosbeosmostosusefuloswhenosyouoshaveosaospositiveosDATos(direct

antiglobulinostest)osandosyouoswantostoosidentifyostheosantibody?

a.osNeutralization

b.osElution

c.osAbsorption

d.osScreenos-oscorrectosanswer-B

, YouoswouldosperformosaosDATosinosallostheosfollowingosscenariososexceptoswhichosone?

a.osPositiveosantibodyosscreen

b.osSuspectedosHDFN

c.osSuspectedostransfusionosreaction

d.osSuspectedosautoimmuneosdiseaseos-oscorrectosanswer-A

Whatoscausesosanosantibodyostoosdissociateosfromosaosredoscellosinostheosacidosglycineoselutionosmethod?

a.osTheosacidosdissolvesosbilipidoslayerosofostheosRBCosmembrane

b.osTheosacidoslysesostheosredoscells

c.osTheosacidoscausesosaosconformationaloschange

d.osTheosacidoslowersostheospHos-oscorrectosanswer-D

Youoshaveosaospatientoswhoosdeliveredosheros5thoschildoslastosmonthosinoswhichosthereoswasosaoslargeosvolumeosof

fetalosmaternaloshemorrhage.osSheosisospreparingosforossurgeryosandoshasosaospositiveosscreen.osAnosanti-e

hadosbeenosidentifiedosbeforeostheosdeliveryosofosheros5thoschild.osButosyouoswantostoosmakeoscertainossheosdoes

notoshaveosanyosotherosantibodies.osBecauseosmostosofosyourospaneloscellsoshaveostheoseosantigenoswhatosmight

youosdoostoostheosplasmaosbeforeostestingositoswithosyourosantibodyospanel.

a.osAnosalloabsorption

b.osAnosautoadsorption

c.osAnoselution

d.osTreatosheroscellsoswithoschoroquineosdiphosphateos-oscorrectosanswer-A

Whichosofostheosserologicalosmethodsosdoesosnotosrequireosaoswashosstep?

a.osTube

b.osGel

c.osSolidosphase

d.osNoneosofostheosaboveos-oscorrectosanswer-B

Whichosofostheosfollowingosdonorsoswouldosbeosacceptableosforosaosdoubleosredosapheresisosdonation?

a.os60-year-
oldosmanoswhoossmokesosaospackosaosday,oshemoglobinos13.5osg/dL,osheightos5'2"osandosweightos130oslbs,oswhoosd
onatedosaosdoubleosredos115osdaysosago

b.os25-year-oldosfemaleosweight-lifter,oshemoglobinos13.0,osheightos5'11"osandosweightos150oslbs.oswho

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