NHA CPT UPDATED SETS ANSWERS AND
QUESTIONS SET A+
✔✔Fact: Granular Leukocytes are polymorphonuclear
Examples of them are: Neutrophils, Eosinophils, and Basophils
Their job is to perform Phagocytosis
They usually react to inflammation - ✔✔...
✔✔Fact: Lymphocytes and monocytes are examples of Agranular Leukocytes
They produce antibodies
Examples are: T cells and B cells - ✔✔...
✔✔What are the differentials and their percentages? - ✔✔Neutrophils: 40% - 60% -
Never
Lymphocytes: 20% - 40% - Let
Monocytes: 2% - 8% - Monkey
Eosinophils: 1% - 4% - Eat
Basophils: 0.5% - 1% - Bad
Band: 0% - 3% - Bananas
✔✔Fact: Thrombocytes are the smallest formed element
Size: 1-4 micrometers - ✔✔...
✔✔What is the function of a thrombocyte? - ✔✔Stoppage of bleeding
✔✔What is the life span of a thrombocyte? - ✔✔9-12 days
✔✔Which gloves are used to perform a venipuncture? - ✔✔Nonsterile, disposable latex,
nitrile, neoprene, polyethylene and vinyl examination gloves are acceptable. A good fit
is essential.
, ✔✔Where should the tourniquet be placed? - ✔✔Tied 3 to 4 inches above elbow
immediately before venipuncture. A tourniquet on for longer than 1 minute may alter test
results.
✔✔Why is the tourniquet used? - ✔✔To prevent venous flow out of the site, causing
veins to bulge.
The tourniquet makes veins easier to locate and puncture.
✔✔What is the most common antiseptic used for venipuncture? - ✔✔70% isopropyl
alcohol
(alcohol does not sterilize skin; it inhibits reproduction of bacteria that might contaminate
the sample)
✔✔How long should you let the 70% isopropyl alcohol dry for? - ✔✔60 seconds
(it should not be used when drawing blood alcohol test, instead use soap pads,
benzalkonium chloride or povidone-iodine which is also known as BETADINE)
✔✔Fact: Blood is about half cells and half liquid; for a test requiring 3 mls of serum 6
mls of blood must be collected - ✔✔...
✔✔What is an additive? - ✔✔Any substance placed within a tube
✔✔Functions of additives are: - ✔✔1. Preventing clotting/anticoagulant
2. Preserves certain blood components
3. Clot activator/promotes clotting
✔✔Where is EDTA found? - ✔✔Lavender topped tube
(prevents platelet clumping and preserves appearance of blood cells for microscopic
examination)
✔✔What is the full name for EDTA? - ✔✔Ethylenediaminetetracetic
✔✔What are the following abbreviations "SST" and "PST" - ✔✔SST: Serum separating
tube
PST: Plasma separating tube
✔✔What is thixotropic gel? - ✔✔Forms a barrier between red cells and plasma when
centrifuged
(It is found in the green-gray marbled topped tubes)
✔✔What is the order of draw? - ✔✔Yellow, light blue, red/red gray, green, lavender,
gray, dark/royal blue top tube
Mnemonic to easily remember it: STOP, LIGHT, RED, GREEN, LIGHT, GO AND DONT
RUN!
QUESTIONS SET A+
✔✔Fact: Granular Leukocytes are polymorphonuclear
Examples of them are: Neutrophils, Eosinophils, and Basophils
Their job is to perform Phagocytosis
They usually react to inflammation - ✔✔...
✔✔Fact: Lymphocytes and monocytes are examples of Agranular Leukocytes
They produce antibodies
Examples are: T cells and B cells - ✔✔...
✔✔What are the differentials and their percentages? - ✔✔Neutrophils: 40% - 60% -
Never
Lymphocytes: 20% - 40% - Let
Monocytes: 2% - 8% - Monkey
Eosinophils: 1% - 4% - Eat
Basophils: 0.5% - 1% - Bad
Band: 0% - 3% - Bananas
✔✔Fact: Thrombocytes are the smallest formed element
Size: 1-4 micrometers - ✔✔...
✔✔What is the function of a thrombocyte? - ✔✔Stoppage of bleeding
✔✔What is the life span of a thrombocyte? - ✔✔9-12 days
✔✔Which gloves are used to perform a venipuncture? - ✔✔Nonsterile, disposable latex,
nitrile, neoprene, polyethylene and vinyl examination gloves are acceptable. A good fit
is essential.
, ✔✔Where should the tourniquet be placed? - ✔✔Tied 3 to 4 inches above elbow
immediately before venipuncture. A tourniquet on for longer than 1 minute may alter test
results.
✔✔Why is the tourniquet used? - ✔✔To prevent venous flow out of the site, causing
veins to bulge.
The tourniquet makes veins easier to locate and puncture.
✔✔What is the most common antiseptic used for venipuncture? - ✔✔70% isopropyl
alcohol
(alcohol does not sterilize skin; it inhibits reproduction of bacteria that might contaminate
the sample)
✔✔How long should you let the 70% isopropyl alcohol dry for? - ✔✔60 seconds
(it should not be used when drawing blood alcohol test, instead use soap pads,
benzalkonium chloride or povidone-iodine which is also known as BETADINE)
✔✔Fact: Blood is about half cells and half liquid; for a test requiring 3 mls of serum 6
mls of blood must be collected - ✔✔...
✔✔What is an additive? - ✔✔Any substance placed within a tube
✔✔Functions of additives are: - ✔✔1. Preventing clotting/anticoagulant
2. Preserves certain blood components
3. Clot activator/promotes clotting
✔✔Where is EDTA found? - ✔✔Lavender topped tube
(prevents platelet clumping and preserves appearance of blood cells for microscopic
examination)
✔✔What is the full name for EDTA? - ✔✔Ethylenediaminetetracetic
✔✔What are the following abbreviations "SST" and "PST" - ✔✔SST: Serum separating
tube
PST: Plasma separating tube
✔✔What is thixotropic gel? - ✔✔Forms a barrier between red cells and plasma when
centrifuged
(It is found in the green-gray marbled topped tubes)
✔✔What is the order of draw? - ✔✔Yellow, light blue, red/red gray, green, lavender,
gray, dark/royal blue top tube
Mnemonic to easily remember it: STOP, LIGHT, RED, GREEN, LIGHT, GO AND DONT
RUN!
