Phlebotomy Exam Questions with 100% Correct Answers Verified | Updated 2024/2025
A condition in which the concentration of blood cells is increased in proportion to the plasma.
Hemoconcentration
The destruction of dissolution of red blood cells, with subsequent release of hemoglobin.
Hemoly...
Phlebotomy Exam Questions with 100%
Correct Answers Verified | Updated
2024/2025
A condition in which the concentration of blood cells is increased in proportion to the plasma.
Hemoconcentration
The destruction of dissolution of red blood cells, with subsequent release of hemoglobin.
Hemolysis
The liquid portion of whole blood that contains active clotting agents.
Plasma
The liquid portion of the whole blood that remains after the blood has clotted.
Serum
A material that appears to be solid until subjected to a disturbance, such as centrifugation,
whereupon it becomes a liquid.
Thixotropic Gel
Most common way to locate a vein before blood is drawn
Tourniquets and palpation
A plastic or glass sealed vacuum tube used to collect a blood specimen obtained through
venipuncture.
Evacuated Collection Tubes/ Vacutainer
Tube Additives
All tubes except the red-topped one contain an additive. Anticoagulants are added to prevent blood
from clotting, additive may be a powder or liquid visible in the tube or liquid sprayed inside the tube
and allowed to dry.
ADDITIVE AND FUNCTION-->SPS prevents blood from clotting and stabilizes bacterial growth
LABORATORY USE--> Blood and body fluid cultures
5ml <--OPTIMUM VOL
N/A<--MINIMUM volume
Yellow Tube
ADDITIVE AND FUNCTION--> None
LABORATORY USE--> Serum tests; chemistry studies, blood bank, serology.
10ml<-- MINIMUM VOLUME
, N/A<--OPT volume
Red Tube
ADDITIVE AND FUNCTION--> None, but contains silica particles to enhance clot formation
LABORATORY USE--> Serum test
10ml<--OPTIMUM VOLUME
N/A<--MINIMUM volume
Red-Gray (marbled) Tube/ Gold
ADDITIVE AND FUNCTION--> Sodium citrate; removes calcium to prevent blood from clotting
LABORATORY USE--> Coagulation testing
4.5ml <--MINIMUM/OPT VOLUME
Light blue Tube
ADDITIVE AND FUNCTION--> Heparin ( sodium/lithium/ammonium ); inhibits thrombin formation to
prevent clotting.
LABORATORY USE--> Chemistry test
10ml <--OPTIMUM VOL
3.5ml <--MINIMUM VOL
Green Tube
ADDITIVE AND FUNCTION--> Lithium heparin and gel for plasma separation
LABORATORY USE--> Plasma determinations in chemistry studies
2ml<--MINIMUM/OPT VOLUME
Green-gray (marbled) Tube/ Light Green
ADDITIVE AND FUNCTION--> Thrombin
LABORATORY USE--> Stat serum demonstrations in chemistry studies
2ml <--MINIMUM/OPT VOLUME
Yellow-gray (marbled) Tube/ Orange
ADDITIVE AND FUNCTION--> EDTA; removes calcium to prevent blood from clotting
LABORATORY USE--> Hematology tests
7ml <--OPTIMUM VOL
2ml <-- MINIMUM VOL
Lavender Tube
ADDITIVE AND FUNCTION --> Potassium oxalate and sodium fluoride; removes calcium to prevent
blood from clotting; fluoride inhibits glycolysis
LABORATORY USE --> Chemistry testing, especially glucose and alcohol levels
10ml <-- MINIMUM/OPT VOLUME
Gray Tube
ADDITIVE AND FUNCTION--> Sodium heparin (also sodium EDTA) inhibits thrombin formation to
prevent clotting
LABORATORY USE --> Chemistry trace elements
7ml <-- OPTIMUM VOL
Royal Blue Tube
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller ACADEMICAIDSTORE. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.39. You're not tied to anything after your purchase.
