Which type of tube should be used to collect blood specimens during a glucose tolerance test?
_____ is and anticoagulant that prevents platelets from clumping and preserves the appearance of blood cells for microscopic preparation.
ETHYLENEDIAMINE TETRAACETIC ACID (EDTA)
A tourniquet i used during the phlebotomy procedure to:
prevent venous flow out of the side
cause the vein to bulge
Thixotropic gel, found in the SST red-gray marbled-topped Vacutainer tube is:
less dense than red blood cells but more dense than serum
The _____ is the part of the venipuncture needle that fits into the syringe or Vacutainer adapter.
The laboratory requisition indicates that you are to collect a venous blood specimen for hematology testing, serum chemistry testing and coagulation studies. What is the proper order of collection for these tubes?
light blue, red, lavender.
you are required to collect a venous sample for typical hematology test, the complete blood count. You collect
a lavender-topped tube
Leaving a tourniquet tied on a patient's arm for longer than the recommended time results in:
Before a routine venipuncture or capillary puncture, the site typically is cleaned with:
During a routine venipuncture, when should the phlebotomist request that the patient "make a fist"?
After applying the tourniquet and before inserting the needle.
During a routine venipuncture, when should the phlebotomist request that the patient "release the fist"?
when blood enters the first tube being drawn.
When is the correct time to remove the tourniquet during a routine venipuncture?
as the last tube to be drawn begins to fill.
Which veni(s) can be used for routine venipuncture?
why should a tourniquet not be tied too tightly?
It impedes arterial blood flow
It restricts venous blood return
It results in poor venous distention
A hematoma can be 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.
Blood obtained via capillary puncture can be collected:
in Microtainer tubes
in capillary tubes
in microhematocrit tubes
onto filter paper
The proper procedure for collecting a serum specimen is to:
allow the specimen to clot
use a red or marbled-top tube
Which is the most correct method for performing a capillary puncture?
wipe away the first drop of blood and then collect the sample.
You are performing a capillary puncture on a patient and are having difficulty collecting and adequate sample. Which of the following is an accepted method to encourage blood flow from the site?
Gently rub the finger along the sides.
Capillary blood samples may be collected at all of the following sites except the?
Which is the proper technique for performing a venipuncture?
The needle bevel is face up, and the needle is inserted at a 15-degree angle.
In performance of a microhematocrit:
the open end of the capillary should be sealed clay before centrifuging
The copper sulfate method of determining the hemoglobin level is:
based on the specific gravity of hemoglobin
commonly used to screen blood donors
While Mr. Chakrabarti's hematocrit sample is spinning in the centrifuge, you perform an automated hemoglobin test on a sample of his blood and record the value as 15g/dL. You do a quick mental calculation and expect that the hematocrit value will be approximately:
Which component of the complete blood count is not necessary to calculate the red cell indices?
Which statement is true about leukocytes?
Leukocytes are the largest circulating blood cells
Granulocytes have segment nuclei
Neutrophils are the most numerous WBCs in circulation
Bacterial infections stimulate increased production of neutrophils
The protime is:
also known as the prothrombin time
performed to evaluate warfarin (Coumadin) theraphy
performed on a specimen collected in a light blue-topped Vacutainer tube
When is administration of Rho(D) immune globulin absolutely necessary?
If an Rh-negative mother gives birth to an Rh-positive stillborn