General
What may occur if an angle of less than 15 degrees is used to perform the venipuncture?
Whole blood is obtained by using a tube that contains
An anticoagulant
A tube with a lavender stopper contatins
EDTA
The order of vein selection
Median cubital, cephalic, basilic
What percentage of the blood is made up of plasma?
55%
When collecting a blood specimen using the vacuum tube method of venipuncture, venous reflux is prevented by
Keeping the patient's arm in a downward position
Which type of tube should be used to collect blood specimens during a glucose tolerance test?
Gray
A plastic red tube contains
clot activator
What is our saying that helps us remember order of draw?
Bad Boys Really Get Lucky With Pretty Girls
When performing a capillary puncture, the finger shouldn't be squeezed to avoid
Diluting the sample with tissue fluid
The slant at the open end of a needle is called
a bevel
On standing, a blood specimen to which an anticoagulant has been added separates into
Plasma, buffy coat, and blood cells
A light blue tube contains
Sodium citrate 3.2%
Put these in order of draw:
Lavender, green, gray, red
Red, green, lavender, gray
Leaving a tourniquet tied on a patient’s arm for longer than the recommended time results in:
hemoconcentration
What makes up the buffy coat?
WBC's and platelets
How is serum obtained?
From clotted blood that has been centrifuged
What additive does a gray tube contain?
Sodium fluoride/potassium oxalate
What order would you draw the following tubes:
Lavender, royal blue, light blue, mint green, tiger top, blood culture, gray
blood culture, light blue, tiger top, mint green, lavender, royal blue, gray
After drawing a blood specimen for an electrolyte profile (serum), the next step is to
Let the specimen stand for 30-45 minutes
What happens if your specimen is hemolyzed? (what occurs and what would your specimen look like)
RBC's rupture, hemoglobin releases into serum. Specimen has a reddish appearance.
How many times should you invert a tube that contains a clot activator?
5
Which additive is an anticoagulant that prevents platelets from clumping and preserves the appearance of blood cells for microscopic preparation.
EDTA
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 or gold, lavender
Name 2 elements found in serum
Glucose, hormones, chloride, antibodies, cholesterol, sodium, potassium, enzymes