NHA Phlebotomy Practice Test
Questions and Answers with Verified
Solutions
A term used to describe a blood sample in which the red blood cells have ruptured is:
✔✔Hemolyzed
Which of the following Vacutainer tubes is
...
NHA Phlebotomy Practice Test
Questions and Answers with Verified
Solutions
A term used to describe a blood sample in which the red blood cells have ruptured is:
✔✔Hemolyzed
Which of the following Vacutainer tubes is routinely used for hematology testing? ✔✔Lavender
No anticoagulants are found in which tube? ✔✔Plain Red
Which type of tube should be used to collect blood specimens during a glucose tolerance test?
✔✔Gray
What is the anticoagulant that prevents platelets from clumping and preserves the appearance of
blood cells for microscopic preparation? ✔✔EDTA( Ethylenediamine tetraacetic acid)
What is the name of the slant at the open end of a needle used for venipuncture? ✔✔Bevel
What is the most commonly used needle size for an adult venipuncture? ✔✔21 guage
What is the most commonly used needle size for an infant and the elderly? ✔✔23 guage
How long should a tourniquet remain tied on a patient's arm? ✔✔No longer than 1 minute
Without a clot activator, whole blood typically clots in how many minutes? ✔✔30-60 min.
Thixotropic gel, found in the SST Tiger top tube is characterized as being: ✔✔less dense than
red blood cells but more dense than serum
What is the proper order for collection of a blood specimen for hematology testing, serum
chemistry testing, and coagulation studies? ✔✔Light blue, red, lavender
What is the correct tube for a typical hematology test (CBC)? ✔✔Lavender
What happens when you leave a tourniquet tied on a patient's arm for longer than the
recommended time? ✔✔Hemoconcentration
What is the site cleaned with before performing a venipuncture or capillary puncture?
✔✔Isopropyl Alcohol
What angle do you position the needle to perform a routine venipuncture? ✔✔15 degrees
When is the correct time to remove the tourniquet during a venipuncture? ✔✔As the last tube to
be drawn begins to fill
What is a winged infusion set also known by? ✔✔Butterfly
What is a hematoma caused by? ✔✔Excessive probing to locate a vein, failure to insert the
needle far enough into the vein, penetration of the needle through a vein.
What is the most common phlebotomy site in adults? ✔✔veins in the antecubital space
What is the clear part of whole blood that contains clotting agents? ✔✔Plasma
What tube is used for a coagulation test? ✔✔Light blue
Oder of Draw ✔✔Sterile
Light Blue
Red/Tiger
Green
Lavender
Gray
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