CRT/RRT Exam Review Questions and Answers Updated 2026

CRT/RRT Exam Review Questions
and Answers Updated 2026
bleedingAtimeA(template)A-AAnswerAlessAthanA10Aminutes


erythrocyteAcountA-AAnswerA4.2A-A5.9Amillion/mcl


erythrocyteAsedimentationArateA(Westergren)A-AAnswerAMale:A0-15mm/hr
Female:A0-20Amm/hr


hematocrit,AbloodA-AAnswerAMale:A42-50%
Female:A40A-A48%


hemoglobin,AbloodA-AAnswerAMale:A13-16Ag/dl
Female:A12-15Ag/dl


leukocyteAcountAandAdifferentialA-AAnswerAleukocyteAcount:A4000-11000/mcl
50-70%AsegmentedAneutrophils
0-5%AbandAforms,A0-3%Aeosinophils
0-1%Abasophils,A30-45%Alymphocytes
0-6%Amonocytes


meanAcorpuscularAvolumeA-AAnswerA86-98AfL


protrhombinAtime,AplasmaA-AAnswerA11-13Aseconds


partialAthromboplastinAtimeA(activated)A-AAnswerA30-40Aseconds


plateletAcountA-AAnswerA150,000A-A300,000/mcL


reticulocyteAcountA-AAnswerA0.5A-A1.5%AofAredAcells

,amylase,AserumA-AAnswerA25A-A125AU/L


arterialAstudies,AbloodA(PatientAbreathingAroomAair):APO2A-AAnswerA75-100AmmHg


arterialAstudies,AbloodA(PatientAbreathingAroomAair):APCO2A-AAnswerA38-42mmHg


arterialAstudies,AbloodA(PatientAbreathingAroomAair):ABicarbonateA-AAnswerA23-26AmEq/L


arterialAstudies,AbloodA(PatientAbreathingAroomAair):ApHA-AAnswerA7.38A-A7.44


arterialAstudies,AbloodA(PatientAbreathingAroomAair):AOxygenASaturationA-
AAnswerA95%AorAgreater


bicarbonate,AserumA-AAnswerA23A-A28AmEq/L


bilirubin,Aserum:A-AAnswerATotalA0.3A-A1.0Amg/dL
DirectA0.1A-A0.3Amg/dL


ComprehensiveAmetabolicApanel:A
Bilirubin,AserumA(total)A-AAnswerA0.3A-A1.0Amg/dL


ComprehensiveAmetabolicApanel:
calcium,AserumA-AAnswerAMale:A9.0A-10.5mg/dL
Female:A8.5A-A10.2mg/dL


ComprehensiveAmetabolicApanel:
cholesterol,AserumA(total)A-AAnswerADesirable:AlessAthanA200md/dL
Borderline-high:A200-
239mg/dL(mayAbeAhighAinAtheApresenceAofAcoronaryAarteryAdiseaseAorAotherAriskAfactors)
High:AgreaterAthanA239md/dL

, ComprehensiveAmetabolicApanel:
creatinine,AserumA-AAnswerA0.7-1.5Amg/dL


Glucose,AplasmaA-AAnswerANormalA(fasting);A70A-115Amg/dL
Borderline:A115-140Amg/dL
Abnormal:AgreaterAthanA140Amg/dL


phosphorus,AserumA-AAnswerA3.0A-A4.5Amg/dL


Proteins,Aserum:
Pre-AlbuminA-AAnswerA0.2A-A0.4Ag/dL


Proteins,Aserum:
AlbuminA-AAnswerA3.5A-A5.5Ag/dL


UreaAnitrogen,AbloodA(BUN)A-AAnswerA8A-A20Amg/dL


UricAacid,AserumA-AAnswerA3.0A-7.0Amg/dL


CholesterolAserum:
HighAdensityAlipoproteinA(HDL)A-AAnswerALow:AlessAthanA40Amg/dL


CholesterolAserum:
LowAdensityAlipoproteinA(LDL)A-AAnswerAOptimal:AlessAthanA100mg/dL
NearAoptimal:A100A-A129Amg/dL
Borderline-high:A130-
159Amg/dLA(mayAbeAhighAinAtheApresenceAofAcoronaryAarteryAdiseaseAorAotherAriskAfactors
)
High:A160A-A189Amg/dL
VeryAhigh:A190Amg/dLAandAbove