nha phlebotomy practice test questions and answers
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NHA Phlebotomy
NHA Phlebotomy
NHA Phlebotomy
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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
-What happens when you leave a tourniquet tied on a patient's arm for
longer than the recommended time? - -Hemoconcentration
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