Study Guide for MedCA Exam
When blood is removed from the body, the blood clots and the liquid portion is called
Serum
If veins in the arm cannot be used for venipuncture, the alternative veins lie
In the dorsal side of hands and wrist
The instrument used to spend the removal of sun by Spinning the blood is called
Centrifuge
Before performing a venipuncture, a pair of clean gloves should be put on in the presence of a patient because
It is a reassuring safety- conscious gesture for both the patient and the worker
The supine position refers to
Lying face up on their back
To avoid- clotting in the blood collection tube
It is extremity important that the blood collected in a purple- topped tube be gently inverted a minimum of eight times
The blood PH range of the normal body is
7.35 to 7.45
Serum should be transported to the laboratory for
Testing and separated from blood cells within 2hrs
Liquid makes up
55% of the total volume of the blood
A person who has to little hemoglobin or a decreased number of red blood cells is know to be
Anemic
The blood cells begin their formation in the
Lymph nodes and bone marrow
If the phlebotomist collects blood in the neonatology department, the practice is
Hrs to a few days old
The iron containing pigment of the blood cells is called
Hemoglobin
Once they enterthe bloodstream, mature red blood cells live approximately
120 days
The study of the nature and cause of disease is known as
Pathology
A special labeled puncture- resistant container for the disposal of needles, scalpels, and syringes is known as
Sharps container
When drawing bllod, the vein that is most preferred is
The median cubital
If blood pressure is read as 120/80, the 120 is the
Systolic pressure
The systolic pressure is the pressure when the heart is
Contracted
A chemical cryusdante substance that prevents the blood from clotting is called an
Anticoagulant
Homeostasis refers to
The steady- state condition
Handwritten information cannot be converted into
Code symbols
Interstitial fluid is
Tissue fluid
Fragile veins are most likely to be found in
Geriatric patients
After a finger stick is performed, the phlebotomist should
Wipe away the first step of blood
The best angle for spreading a blood smear is by
Using two glass slides at 30 degrees
Skin puncture samples are often used for
White blood cell differentials
During a skin puncture procedure, the cut should be
Across the fingerprint lines
In most cases, blood collected to determine medication levels should be collected
Just prior to the next dose of medication
In relation to veins, the term occluded means
Obstructed
The thumb has a
Pulse
The last step in any phlebotomy procedure, including skin puncture is checking that
The bleeding has stopped and thanking the patient for cooperating
Alcohol should be allowed to dry for
30 to 60 seconds before the venipuncture
During the venipuncture, the best angle for inserting the needle into to the skin is
15 to 30 degrees
During the venipuncture, the phlebotomist releases the tourniquet
After the needle is inserted and the blood begins to flow
The term "butterfly" refers to a
Winged infusion set
During the venipuncture procedure, the needle should always be inserted with the
Bevel side up
Blood and urine specimens for microbiological cultures should be transported to the lab quickly to improve
The likelihood of defoliation pathogens
Normal blood specimens take __________ to clot
30 to 60 minutes
Bar codes in phlebotomy applications are not used to
Denote patient arm preference
The preferred anticoagulant for the collection of whole blood foot STAT situations in clinical chemistry is
Heparin
A blood cell count requires
whole blood collected in a purple topped tube
The yellow topped vacuum collection tube has
Sodium polyanetholesulfonate (SPS) as the additive
Fire newborns, the penetration depth of Lancets for blood must be
Less than 2.0mm
If a blood specimen has a separation device, it should be
Centrifuges once
To chill a blood specimen as it is transported the care worker should
Use icy water
Grey/ red or clear
No additive (discard tube)
Yellow/ red
Polymer Barrier
Gold
Clot activator and polymer barrier
Red
None or clot activator in plastic tube
Orange
Thrombin (rapid serum)
Red/ black
Clot activator and polymer barrier
Green/ grey or light green
Polymer barrier and lithium heparin
Light blue
Buffered sodium citrate
Lavender
K,EDTA, toxicology and nutritional studies
Gray
Sodium fluoride and potassium oxalate or sodium fluoride and Na2,EDTA
Green
Lithium heparin, sodium heparin, or ammonia heparin
Royal blue
K,EDTA
Pink
Blood bank k, EDTA
Tan
K,EDTA lead testing
Black
Sodium citrate hematology
Yellow
Sodium polyanethol sulfonate (SPS), acid citrate dextrose (ACD)
– Blood Culture (yellow)
- Light Blue
– Red
–
Gold
– Light Green
– Dark green
– Lavender
– Gray
– Blood Culture (yellow)
- Light Blue
– Red
–
Gold
– Light Green
– Dark green
– Lavender
– Gray