NHA Phlebotomy Practice Test
Questions and Answers.
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
Questions and Answers.
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
