NCCT Phlebotomy Exam Study Guide: Questions &
Answers
The most important step in the performance of a venipuncture is? - ANSWER:IDENTIFYING THE PATIENT
the body system that filters blood to eliminate waste, helps maintain blood pH and regulates water
balance is the what? - ANSWER:urinary system
which of these needles has the smallest bore or diameter? - ANSWER:23g
a complete blood count CBC is collected in an evacuated tube with what colored tube? -
ANSWER:lavender
when performing a routine skin puncture, the site should be alcohol cleaned and? - ANSWER:allowed to
air dry on its own
when using two glass slides to make a blood smear the recommended angle of contact between them is
approximately how many degrees? - ANSWER:30 degrees
an evacuated tube system for venipuncture consists of all but which one of these components?
a. vacuum collection tube with color coded stopper
b. special plastic holder known as an adapter
c compartmentalized, hard shell collection tray
d double sided, multi-sample needle with slanted hore - ANSWER:c. compartmentalized, hard shell
collection tray
confirming an outpatients name and what provides two important identifiers for blood collection -
ANSWER:date of birth
to draw blood from a patient with an open iv line, the selected site should be located where -
ANSWER:below the iv
why does a multi-sample needle have a rubber sleeve over the end of the needle that is inserted into the
collection tube? - ANSWER:to prevent blood from seeping into the collection tubes
squeezing the finger too vigorously during capillary blood collection can cause erroneous lab test results
due to what - ANSWER:dilution with tissue fluid
the smallest veins of the human anatomy are known as what? - ANSWER:venules
treating all lab specimens as if they are hazardous and infectious is the basis for - ANSWER:universal
precautions
OSHA requires training and educational information be given to phlebotomist on all but which one of the
following topics?
, blood borne pathogens
preventing identification errors
needle safety and handling
glass and shards disposal - ANSWER:preventing identification errors
which of these elements in blood is bound by EDTA in a collection tube to prevent clotting?
potassium
magnesium
calcium
sodium - ANSWER:calcium
the hands of the phlebotomist should always be washed - ANSWER:before specimen collection
after specimen collection
and even though gloves are used
if a glass tube breaks during centrifugation, what sequence of actions would be best? - ANSWER:bring
the centrifuge to a stop, open the lid and use forceps to remove any glass
which of these is a common component of disinfectant solutions used for collection of blood cultures? -
ANSWER:chlorhexidine
if the information on an inpatients identification bracelet is not identical to the information on the
phlebotomy test requisition and labels for that patient, the phlebotomist should - ANSWER:refrain from
drawing the sample until ID is resolved
before performing a venipuncture, why will a phlebotomist tie a tourniquet - ANSWER:to help locate
veins in the ac
when a 5 milliliter evacuated tube appears to extract blood with too much force from a weak vein
(causing the vein to collapse) the phlebotomist might have better results using a - ANSWER:Pediatric
sized tube
to collect blood for a prothrombin tiem test, use an evacuated tube with what color stopper -
ANSWER:light blue
to collect blood without an additive, use an evacuated tube with a what colored stopper - ANSWER:red
one beside point of care lab test that is used before surgery to check whether a patient has functional
platelets is known as what test - ANSWER:bleeding time test
must wash - ANSWER:hands before each draw
can a phlebotomist legally draw blood from a fully cognizant pt who refuses to consent to it -
ANSWER:NO
Answers
The most important step in the performance of a venipuncture is? - ANSWER:IDENTIFYING THE PATIENT
the body system that filters blood to eliminate waste, helps maintain blood pH and regulates water
balance is the what? - ANSWER:urinary system
which of these needles has the smallest bore or diameter? - ANSWER:23g
a complete blood count CBC is collected in an evacuated tube with what colored tube? -
ANSWER:lavender
when performing a routine skin puncture, the site should be alcohol cleaned and? - ANSWER:allowed to
air dry on its own
when using two glass slides to make a blood smear the recommended angle of contact between them is
approximately how many degrees? - ANSWER:30 degrees
an evacuated tube system for venipuncture consists of all but which one of these components?
a. vacuum collection tube with color coded stopper
b. special plastic holder known as an adapter
c compartmentalized, hard shell collection tray
d double sided, multi-sample needle with slanted hore - ANSWER:c. compartmentalized, hard shell
collection tray
confirming an outpatients name and what provides two important identifiers for blood collection -
ANSWER:date of birth
to draw blood from a patient with an open iv line, the selected site should be located where -
ANSWER:below the iv
why does a multi-sample needle have a rubber sleeve over the end of the needle that is inserted into the
collection tube? - ANSWER:to prevent blood from seeping into the collection tubes
squeezing the finger too vigorously during capillary blood collection can cause erroneous lab test results
due to what - ANSWER:dilution with tissue fluid
the smallest veins of the human anatomy are known as what? - ANSWER:venules
treating all lab specimens as if they are hazardous and infectious is the basis for - ANSWER:universal
precautions
OSHA requires training and educational information be given to phlebotomist on all but which one of the
following topics?
, blood borne pathogens
preventing identification errors
needle safety and handling
glass and shards disposal - ANSWER:preventing identification errors
which of these elements in blood is bound by EDTA in a collection tube to prevent clotting?
potassium
magnesium
calcium
sodium - ANSWER:calcium
the hands of the phlebotomist should always be washed - ANSWER:before specimen collection
after specimen collection
and even though gloves are used
if a glass tube breaks during centrifugation, what sequence of actions would be best? - ANSWER:bring
the centrifuge to a stop, open the lid and use forceps to remove any glass
which of these is a common component of disinfectant solutions used for collection of blood cultures? -
ANSWER:chlorhexidine
if the information on an inpatients identification bracelet is not identical to the information on the
phlebotomy test requisition and labels for that patient, the phlebotomist should - ANSWER:refrain from
drawing the sample until ID is resolved
before performing a venipuncture, why will a phlebotomist tie a tourniquet - ANSWER:to help locate
veins in the ac
when a 5 milliliter evacuated tube appears to extract blood with too much force from a weak vein
(causing the vein to collapse) the phlebotomist might have better results using a - ANSWER:Pediatric
sized tube
to collect blood for a prothrombin tiem test, use an evacuated tube with what color stopper -
ANSWER:light blue
to collect blood without an additive, use an evacuated tube with a what colored stopper - ANSWER:red
one beside point of care lab test that is used before surgery to check whether a patient has functional
platelets is known as what test - ANSWER:bleeding time test
must wash - ANSWER:hands before each draw
can a phlebotomist legally draw blood from a fully cognizant pt who refuses to consent to it -
ANSWER:NO
