MRO PRACTICE EXAM CERTIFICATION
EVALUATION EXAMS 2026 QUESTIONS WITH
SOLUTIONS GUARANTEED PASS
◉ Hemoconcentration of a specimen can be avoided by. Answer:
Removing the tourniquet within one minute.
◉ A colllapsed vein will cause a. Answer: cessation of blood flow.
◉ Swelling caused from blood leaking from a blood vessel is.
Answer: hematoma
◉ How far above the venipuncture site should the tourniquet be
wrapped around arm?. Answer: 3 to 4 inches
◉ What vein should be used when sample is needed from dialysis
patient?. Answer: hand vein
◉ what is the most critically affected analyte in a hemolyzed
specimen?. Answer: Potassium
◉ Partial penetration of the upper wall of a vein may. Answer: allow
blood to leak into subcutaneous tissue by way of needle bevel
,◉ when blood is inoculated into blood culture bottles using a
butterfly apparatus which bottle is inoculated first?. Answer: aerobic
bottle
◉ The color tube that is most frequently associated with coagulation
tests is. Answer: light blue
◉ Which substance has a higher concentration in capillary blood
than venous blood?. Answer: Glucose
◉ A serum or plasma specimen containing abnormally increased
fatty substances from animal or vegetable origin is. Answer: lipemic
◉ A skin puncture is preferred over a venipuncture when the
patient. Answer: has severe burns
◉ Prior to bandaging the puncture site the phlebotomist should.
Answer: examine the site for bleeding.
◉ when blood collected in a syringe must be placed in evacuated
tubes it is best to use. Answer: blood transfer device
, ◉ Blood smears made from EDTA specimens must be prepared
within. Answer: 1 hour of collection
◉ when patient develops syncope during a venipuncture, the
phlebotomist should first. Answer: remove tourniquet and call for
help
◉ the main reason not to use expired evacuated tubes. Answer: they
may exhibit incomplete filling
◉ the most critical part of a blood culture collection is. Answer: skin
antisepsis of the collection site
◉ what would trigger hematoma formation. Answer: removing the
needle while the tourniquet still on the arm
◉ Heparin prevents clotting by. Answer: inactivating thrombin
◉ if a pt is critical or an antibiotic needs to be given right away, and
two blood culture sets are collected. Answer: immediately from two
different sites
◉ if additive contamination occurred from an EDTA evacuated tube,
what test would potentially be affected?. Answer: Potassium level
EVALUATION EXAMS 2026 QUESTIONS WITH
SOLUTIONS GUARANTEED PASS
◉ Hemoconcentration of a specimen can be avoided by. Answer:
Removing the tourniquet within one minute.
◉ A colllapsed vein will cause a. Answer: cessation of blood flow.
◉ Swelling caused from blood leaking from a blood vessel is.
Answer: hematoma
◉ How far above the venipuncture site should the tourniquet be
wrapped around arm?. Answer: 3 to 4 inches
◉ What vein should be used when sample is needed from dialysis
patient?. Answer: hand vein
◉ what is the most critically affected analyte in a hemolyzed
specimen?. Answer: Potassium
◉ Partial penetration of the upper wall of a vein may. Answer: allow
blood to leak into subcutaneous tissue by way of needle bevel
,◉ when blood is inoculated into blood culture bottles using a
butterfly apparatus which bottle is inoculated first?. Answer: aerobic
bottle
◉ The color tube that is most frequently associated with coagulation
tests is. Answer: light blue
◉ Which substance has a higher concentration in capillary blood
than venous blood?. Answer: Glucose
◉ A serum or plasma specimen containing abnormally increased
fatty substances from animal or vegetable origin is. Answer: lipemic
◉ A skin puncture is preferred over a venipuncture when the
patient. Answer: has severe burns
◉ Prior to bandaging the puncture site the phlebotomist should.
Answer: examine the site for bleeding.
◉ when blood collected in a syringe must be placed in evacuated
tubes it is best to use. Answer: blood transfer device
, ◉ Blood smears made from EDTA specimens must be prepared
within. Answer: 1 hour of collection
◉ when patient develops syncope during a venipuncture, the
phlebotomist should first. Answer: remove tourniquet and call for
help
◉ the main reason not to use expired evacuated tubes. Answer: they
may exhibit incomplete filling
◉ the most critical part of a blood culture collection is. Answer: skin
antisepsis of the collection site
◉ what would trigger hematoma formation. Answer: removing the
needle while the tourniquet still on the arm
◉ Heparin prevents clotting by. Answer: inactivating thrombin
◉ if a pt is critical or an antibiotic needs to be given right away, and
two blood culture sets are collected. Answer: immediately from two
different sites
◉ if additive contamination occurred from an EDTA evacuated tube,
what test would potentially be affected?. Answer: Potassium level
