NCA CLT Review Questions
A 24 hr urine collection and a plasma sample drawn at the same time period
produced the following results:
Plasma creatinine = 1.2
Urine creatinine = 150
Urine volume = 1.2 L
The creatinine clearance for this patient is:
A. 104 mL/min
B. 112 mL/min
C. 125 mL/min
D. 150 mL/min - correct answer ✔A. 104 mL/min
Which of the following entities is indicative of disease when found in urine
sediment, regardless of the number present?
A. RBCs
B. hyaline casts
C. granular casts
D. fat globules - correct answer ✔D. fat globules
Serum total protein results obtained using the buret reaction can be falsely
increased if:
A. arterial blood is used
,B. the specimen is hemolyzed
C. a non-fasting specimen is used
D. lipids are removed prior to analysis - correct answer ✔B. the specimen is
hemolyzed
An enzyme assay that shows substrate depletion should be repeated using:
A. less sample
B. less substrate
C. longer light path
D. longer reaction time - correct answer ✔A. less sample
Which of the following best describes the proper collection of a midstream
urine specimen?
A. after beginning urination into a toilet, patient collects some urine into the
container
B. patient collects the initial stream of urine, then urinates the remaining into
the toilet
C. immediately upon rising in the morning, patient collects urine into a sterile
container
D. urine is removed directly from the bladder by a physician using a needle
and syringe - correct answer ✔A. after beginning urination into a toilet,
patient collects some urine into the container
A urine specimen collected from a hospitalized diabetic patient with probable
hepatitis was not refrigerated. It remained at room temp for 4 hours before
being delivered to the lab for testing. it was not accepted by the lab, and the
nursing station was called. The tech explained the specimen should be
recollected due to the likely occurrence of which of the following changes?
,A. odor increases, glucose increases
B. clarity decreases, bilirubin decreases
C. color decreases, urobilinogen increases
D. specific gravity decreases, ketones decrease - correct answer ✔B. clarity
decreases, bilirubin decreases
If a patient refuses to have a blood sample drawn, the phlebotomist should:
A. restrain the patient
B. summon help
C. refrain from drawing the sample
D. draw the sample anyways - correct answer ✔C.refrain from drawing the
sample
A sample for an arterial blood gas determination should be transported to the
lab:
A. with routine samples
B. packed with ice
C. within 8 hrs
D. via a pneumatic transport system - correct answer ✔B. packed with ice
When multiple blood samples are drawn, a sample for coagulation studies
should be drawn:
A. prior to a plain (red) tube
, B. After all other samples have been drawn
C. immediately after a blood culture sample
D. prior to a hematology sample - correct answer ✔D.prior to a hematology
sample
When a blood sample is drawn by a syringe, the order for filling vacutainer
tubes should be:
A. red, blue, purple
B. blue, purple, red
C. purple, blue, red
D. red, purple, blue - correct answer ✔B.blue, purple, red
When collecting a blood sample from an intravenous line, the volume of blood
to be discarded before collecting the sample is:
A. 0.0 mL
B.2.0mL
C.5.0mL
D. 10 mL - correct answer ✔C. 5.0mL
You are a phlebotomist and must draw a blood sample from a trauma patient
in the ED. The patient has an IV in his left wrist and a cast on his right arm.
Which of the following sites should be used to obtain blood for a glucose
analysis?
A. vein in left hand
B. left median cubital vein
A 24 hr urine collection and a plasma sample drawn at the same time period
produced the following results:
Plasma creatinine = 1.2
Urine creatinine = 150
Urine volume = 1.2 L
The creatinine clearance for this patient is:
A. 104 mL/min
B. 112 mL/min
C. 125 mL/min
D. 150 mL/min - correct answer ✔A. 104 mL/min
Which of the following entities is indicative of disease when found in urine
sediment, regardless of the number present?
A. RBCs
B. hyaline casts
C. granular casts
D. fat globules - correct answer ✔D. fat globules
Serum total protein results obtained using the buret reaction can be falsely
increased if:
A. arterial blood is used
,B. the specimen is hemolyzed
C. a non-fasting specimen is used
D. lipids are removed prior to analysis - correct answer ✔B. the specimen is
hemolyzed
An enzyme assay that shows substrate depletion should be repeated using:
A. less sample
B. less substrate
C. longer light path
D. longer reaction time - correct answer ✔A. less sample
Which of the following best describes the proper collection of a midstream
urine specimen?
A. after beginning urination into a toilet, patient collects some urine into the
container
B. patient collects the initial stream of urine, then urinates the remaining into
the toilet
C. immediately upon rising in the morning, patient collects urine into a sterile
container
D. urine is removed directly from the bladder by a physician using a needle
and syringe - correct answer ✔A. after beginning urination into a toilet,
patient collects some urine into the container
A urine specimen collected from a hospitalized diabetic patient with probable
hepatitis was not refrigerated. It remained at room temp for 4 hours before
being delivered to the lab for testing. it was not accepted by the lab, and the
nursing station was called. The tech explained the specimen should be
recollected due to the likely occurrence of which of the following changes?
,A. odor increases, glucose increases
B. clarity decreases, bilirubin decreases
C. color decreases, urobilinogen increases
D. specific gravity decreases, ketones decrease - correct answer ✔B. clarity
decreases, bilirubin decreases
If a patient refuses to have a blood sample drawn, the phlebotomist should:
A. restrain the patient
B. summon help
C. refrain from drawing the sample
D. draw the sample anyways - correct answer ✔C.refrain from drawing the
sample
A sample for an arterial blood gas determination should be transported to the
lab:
A. with routine samples
B. packed with ice
C. within 8 hrs
D. via a pneumatic transport system - correct answer ✔B. packed with ice
When multiple blood samples are drawn, a sample for coagulation studies
should be drawn:
A. prior to a plain (red) tube
, B. After all other samples have been drawn
C. immediately after a blood culture sample
D. prior to a hematology sample - correct answer ✔D.prior to a hematology
sample
When a blood sample is drawn by a syringe, the order for filling vacutainer
tubes should be:
A. red, blue, purple
B. blue, purple, red
C. purple, blue, red
D. red, purple, blue - correct answer ✔B.blue, purple, red
When collecting a blood sample from an intravenous line, the volume of blood
to be discarded before collecting the sample is:
A. 0.0 mL
B.2.0mL
C.5.0mL
D. 10 mL - correct answer ✔C. 5.0mL
You are a phlebotomist and must draw a blood sample from a trauma patient
in the ED. The patient has an IV in his left wrist and a cast on his right arm.
Which of the following sites should be used to obtain blood for a glucose
analysis?
A. vein in left hand
B. left median cubital vein
