MLS Practice Comp Exam Questions and Answers Updated 2026

MLS Practice Comp Exam Questions
and Answers Updated 2026
TheApathophysiologyAofAGlazmannAthrombastheniaAis:
A.ADeficiencyAofAdenseAgranules
B.ADeficiencyAofAglycoproteinAIb/IXAreceptor
C.ADeficiencyAofAglycoproteinAIIb/IIIaAreceptor
D.AdeficiencyAofAmicrotubulesA-AAnswerAC.ADeficiencyAofAglycoproteinAIIb/IIIaAreceptor


ChagasAdiseaseAisAcausedAby:
A.ATrypanosomaAcruzi
B.ATrypanosomaApalladium
C.ATrypanosomaAbrucei
D.ANoneAofAtheAaboveA-AAnswerAA.ATrypanosomaAcruzi


WhatAwouldAaApatientAwithAaAmicrocyctic/hypochromicAanemiaAmostAlikelyAhaveAnotedAonAtheirACBC
?
A.AMCVAlessAthanA80Afl
B.AHemoglobinAofA14.5Agm/dL
C.AMCHCAofA36Agm/dL
D.AMCHAofA28-31Apg/dLA-AAnswerAA.AMCVAlessAthanA80Afl


TheAtestAofAchoiceAandAmostAsensitiveAassayAforAuseAwithACSFAtoAdiagnoseAasepticAmeningitisAcause
dAbyAenterovirusAisAwhichAofAtheAfollowing?
A.ACellAculture
B.APCR
C.AAgntigenemiaAimmunoassay
D.AShellAvialAassayA-AAnswerAB.APCR


Frequently,ADNAAprobesAareAusedAtoAdetectAtargetAsequencesAinANorthernAorASouthernAblots.AHybrid
izationAoccursAbetweenADNAAprobeAandARNAAorADNAAonAtheAblot,Arespectively.AToAensureAthatAonly
AexactlyAmatchedAcomplementaryAsequencesAhaveAboundAtogether,AtheAblotAisAwashedAunderAstringe
ntAconditions.AStringencyAofAtheAwashAstepsAtoAremoveAunboundAandAmismatchedAprobedAcanAbeAin
creasedAby:
A.AHighAtemperature,AhighANaClAconcentration,AandAhighAdetergentA(i.e.ASDS)Asolution
B.AHighAtemperature,AlowANaClAconcentraation,AandAhighAdetergentA(i.e.ASDS)Asolution

,C.AHighAtemperature,AhighANaClAconcentration,AandAlowAdetergentA(i.e.ASDS)Aconcentration
D.ALowAtemperature,AhighANaClAconcentration,AandAhighAdetergentA(i.e.ASDS)AsolutionA-
AAnswerAB.AHighAtemperature,AlowANaClAconcentration,AandAhighAdetergentA(i.e.ASDS)Asolution


AnAorderedAsequenceAofAeventsAmakesAupAtheAcellAcycle.AWhichAofAtheAfollowingAdescribesAtheAcorr
ectAsequenceAofAeventsAstartingAatAG1?
A.AG1,AG2,AS,AM
B.AG1,AS,AG2,AM
C.AG1,AM,AG2,AS
D.AG1,AS,AM,AG2A-AAnswerAB.AG1,AS,AG2,AM


AAmoldAisAisolatedAinAtheAlaboratoryAthatAdisplaysAaAvelvety,Agray-
greenAcolonyAmorphology.AOnAmicroscopicAevaluation,Aflask-
shapedAconidiophoresAarrangedAinAaAbrush-
likeAformationAareAseen.ATheAmostAlikelyAorganismAisAwhichAofAtheAfollowing?
A.APenicilliumAsp
B.AAcremoniumAsp
C.APaecilomycesAsp
D.AScopulariopsisAspA-AAnswerAA.APenicilliumAsp


MostAofAtheAchromosomesAabnormalitiesAseenAinAmyelodysplasticAsyndromeAinvolveAwhichAofAtheAfol
lowingAchromosomes?
A.A5,A7,A8,A11,A13,A20
B.A2,A3,A9,A15,A16,A26
C.A3,A6,A10,A14,A21
D.A1,A4,A15,A17,A21A-AAnswerAA.A5,A7,A8,A11,A13,A20


CrystalsAinAsynovialAfluidAthatAappearAneedle-
likeAandAareAyellowAwhenAtheirAlongAaxesAlieAparallelAtoAtheAdirectionAofAtheAslowAwaveAvibration
AofAtheAcompensatedApolarizedAlightAare:
A.AMonosodiumAurate
B.ACorticosteroid
C.AHydroxyapatite
D.ACalciumAPyrophosphateADihydrateA-AAnswerAA.AMonosodiumAUrate


TheAmostAcommonlyAusedAchallengeAtestAtoAassistAinAevaluatingAaApotentialAgrowthAhormoneAdeficie
ncyAisAthe:

,A.AInsulinAchallengeAtest
B.ADexamethasoneAsuppressionAtest
C.AOralAglucoseAtoleranceAtest
D.ACaptoprilAsuppressionAtestA-AAnswerAInsulinAchallengeAtest


InAtheAregulatorAtypeAofARhAnull,AwhichAofAtheAfollowingAgenesAisAmutated?
A.ARHAG
B.ARHCE
C.ARHD
D.ALWA-AAnswerAA.ARHAG


TheAmajorAintracellularAcationAisAwhichAofAtheAfollowing?
A.APotassium
B.ASodium
C.AChloride
D.ABicarbonateA-AAnswerAA.APotassium


AAdermatophyteAmoldAisolatedAinAtheAlaboratoryAhasAtheAfollowingAproperties:AMacroscopicA=Awhite
,AfluffyAcolonyAwithAredAreverse;AMicroscopicA=AtearAdropAshaped,A"thyrse"AmicroconidiaAandAnoAm
acroconidia;AUreaseAnegativeAandAHairAperforationAnegative.AWhatAisAtheAmostAlikelyAidentification?
A.ATrichophytonAtonsurans
B.ATrichophytonAmentagrophytes
C.ATrichophytonArubrum
D.AEpidermophytonAfloccosumA-AAnswerAC.ATrichopytonArubrum


AApatientAcurrentlyAtypesAasAgroupAO,ARhApositive.ATheApatient'sAhistoryAshowsAtheAsameAABO/RhA
butAwithAaApreviouslyAidentifiedAanti-
E.AHowever,AtheAcurrentAsampleAshowsAaAnegativeAantibodyAscreen.AWhatAtypeAofAbloodAshouldAbe
AtransfusedAtoAthisApatient?
A.AOARhApositive,AAHGAcompatibleA
B.AOARhApositive,AnegativeAforAtheAEAantigen,AAHG-crossmatchAcompatibleA
C.AOARhAnegative
D.AOARhApositive,AEAantigenAnegative,AelectronicAcrossmatchAacceptableA-
AAnswerAB.AOARhApositive,AnegativeAforAEAantigen,AAHG-crossmatchAcompatible

, AnAMLSAaccidentallyAaddsAfactorAVIIAdeficientAplasmaAtoAtheApatient'sAspecimenAinsteadAofAnormalA
pooledAplasmaAwhenAperformingAtheAinitialAmixingAstudies.AAAPTAisAthenAperformedAonAtheAmixed
Aspecimen.AIfAtheAPTAdoesAnotAcorrectAwhatAisAtheAlikelyAexplanation?
A.ATheApatientAhasAaAlupuslikeAanticoagulant
B.ATheApatientAlikelyAhasAaAfactorAVIIAdeficiency
C.ANoAconclusionsAcanAbeAmadeAbecauseAtheAfactor-
deficientAplasmaAreagentAaffectsAallAPTAmeasurements
D.AThisAisAaAnormalAresultA-AAnswerAB.ATheApatientAlikelyAhasAaAfactorAVIIAdeficiency


WhichAdisorderAresultsAinAsecretionAofA"BenceAJones"AlightAchainsAinAtheAurine?
A.AWaldenstrom'sAMacroglobulinemiaA
B.AMultipleAMyeloma
C.AWegener'sADisease
D.ASevereAcombinedAimmunodeficiencyA-AAnswerAB.AMultipleAmyeloma


PlateletsAmustAbeAkeptAinAconstantAmotionAforAwhichAofAtheAfollowingAreasons?
A.AMaintainAtheApHAsoAtheAplateletsAwillAbeAaliveAbeforeAtransfusionA
B.AKeepAtheAplateletsAinAsuspensionAandApreventAclumpingAofAtheAplateletsA
C.AMimicAwhatAisAgoingAonAinAtheAbloodAvessels
D.APreserveAtheAcoagulationAfactorsAandAplateletAviabilityA-
AAnswerAA.AMaintainAtheApHAsoAtheAplateletsAwillAbeAaliveAbeforeAtransfusion


WhichAofAtheAfollowingAfactorsAbindsAtoAplateletsAviaAtheAglycoproteinAIb/IXAreceptor?A
A.AvonAWillebrandAfactor
B.AFactorAII
C.AFibrinogen
D.AThrombinA-AAnswerAA.AvonAWillebrandAfactor


TheAtypeAofAgraftArejectionAthatAoccursAwithinAminutesAofAaAtissueAtransplantAis:
A.AAcute
B.AChronic
C.AHyperacute
D.AAcceleratedA-AAnswerAC.AHyperacute