NAPT EXAM Questions and Answers (Verified Answers)
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Terms in this set (153)
What is the difference between serum and plasma? Serum=the fluid portion of clotted blood,
Plasma= fluid portion of unclotted blood
which contains all of its clotting factors. (fibrinogen)
List tubes that have an anticoagulant Lavender, green, pink, royal blue with lavender stripe, light blue, and gray
List tubes that do not have an anticoagulant Red, tiger top. gold, and royal blue with a red stripe
What was the CLSI formerly called? NCCLS
What is the most common cause of BCX/ Blood Culture Improper site preparation
contamination?
Why is it important to follow the order of draw? To prevent cross contamination
What is the additive in the light blue top tube? Sodium Citrate
, Why does the CLSI standard mandate the phlebotomist To prevent thromboplastin release or to clear the line of air
draw a red top tube before a light blue even thought
the requisition form does not call for it?
How many times should the light blue tube be 3-4 times
inverted?
Common tests for the light blue tube APTT,PT,PTT
T/F Light blue tubes are used to test diabetes. False
What does the light blue tube yield? plasma
What is the additive in the red tube? none
What does the red tube yield? Serum
The red top tube is also known as what ? Plain Vacuum tube
Which section of the lab processes the red top tube? Chemistry
How many minutes does it take blood to clot naturally Within 30-60 minutes
with no additives?
What is the gold/ tiger top tube most commonly SST
referred to ?
What is thixotropic gel? Forms a barrier between the cells and serum/plasma
What are he common test listed for the tiger top tube? CMP,BMP
What is the additive in the tiger top tube? Silicia
What does silicia do? promotes rapid clot formation
What does the mint green tube yield? Plasma
What does PST stand for? Plasma Separation Tube
Mint green tube common test? hCG, LYTES
How many times is the mint green tube inverted? 8 times
Additive in the mint green tube? Lithium Heparin
Additive of Dark green top tube? Sodium Heparin
Section of the lab Tiger top goes to? Chemistry
Section of the lab mint green goes to? Chemistry
Section of lab dark green goes to? Chemistry
Most Recent exam COMPLETE (2026) (Latest Update 2026)
UPDATE!!
Leave the first rating
Save
Students also studied
NU136 - Exam 4 review NUR-635 Pharm final PA Pesticide Applicator Exam Core I... NR
Teacher 124 terms Teacher 133 terms Teacher 64 terms Te
dianawesonga66 Preview brainscape66 Preview Ken_Nya5 Preview
Practice questions for this set
Learn 1 /7 Study with Learn
Terms in this set (153)
What is the difference between serum and plasma? Serum=the fluid portion of clotted blood,
Plasma= fluid portion of unclotted blood
which contains all of its clotting factors. (fibrinogen)
List tubes that have an anticoagulant Lavender, green, pink, royal blue with lavender stripe, light blue, and gray
List tubes that do not have an anticoagulant Red, tiger top. gold, and royal blue with a red stripe
What was the CLSI formerly called? NCCLS
What is the most common cause of BCX/ Blood Culture Improper site preparation
contamination?
Why is it important to follow the order of draw? To prevent cross contamination
What is the additive in the light blue top tube? Sodium Citrate
, Why does the CLSI standard mandate the phlebotomist To prevent thromboplastin release or to clear the line of air
draw a red top tube before a light blue even thought
the requisition form does not call for it?
How many times should the light blue tube be 3-4 times
inverted?
Common tests for the light blue tube APTT,PT,PTT
T/F Light blue tubes are used to test diabetes. False
What does the light blue tube yield? plasma
What is the additive in the red tube? none
What does the red tube yield? Serum
The red top tube is also known as what ? Plain Vacuum tube
Which section of the lab processes the red top tube? Chemistry
How many minutes does it take blood to clot naturally Within 30-60 minutes
with no additives?
What is the gold/ tiger top tube most commonly SST
referred to ?
What is thixotropic gel? Forms a barrier between the cells and serum/plasma
What are he common test listed for the tiger top tube? CMP,BMP
What is the additive in the tiger top tube? Silicia
What does silicia do? promotes rapid clot formation
What does the mint green tube yield? Plasma
What does PST stand for? Plasma Separation Tube
Mint green tube common test? hCG, LYTES
How many times is the mint green tube inverted? 8 times
Additive in the mint green tube? Lithium Heparin
Additive of Dark green top tube? Sodium Heparin
Section of the lab Tiger top goes to? Chemistry
Section of the lab mint green goes to? Chemistry
Section of lab dark green goes to? Chemistry
