Blood Collection Tubes: Types and Uses in Phlebotomy

Question 1

Which tube is appropriate for collecting blood for coagulation studies?

Accepted Answer

Red-top tube with clot activator

Answer

Lavender-top tube

Answer

Blue-top tube

Answer

Green-top tube

Question 2

What is the primary function of the serum separator gel in blood collection tubes?

Accepted Answer

To separate serum from cells

Answer

To prevent clotting

Answer

To preserve the blood sample

Answer

To enhance blood flow

Question 3

Which tube is used for collecting blood for blood cultures?

Accepted Answer

Gray-top tube

Answer

Yellow-top tube without gel

Answer

Blue-top tube

Answer

Green-top tube

Question 4

Which tube is used for collecting blood for hematology tests?

Accepted Answer

Lavender-top tube with EDTA

Answer

Red-top tube

Answer

Blue-top tube

Answer

Purple-top tube

Question 5

What is the main purpose of the anticoagulant in a blood collection tube?

Accepted Answer

To prevent clotting

Answer

To preserve the blood sample

Answer

To enhance blood flow

Answer

To separate serum from cells

Question 6

Which type of blood collection tube contains EDTA as an anticoagulant and is typically used for complete blood count?

Accepted Answer

Royal blue

Answer

Pink

Answer

Tiger Stripe

Answer

Yellow

Question 7

What is the main purpose of the gel barrier in blood collection tubes?

Accepted Answer

To separate serum from cells

Answer

To prevent clot retraction

Answer

To preserve blood cell morphology

Answer

To prevent hemolysis

Question 8

Which type of blood collection tube is used to collect blood for serum analysis, allowing the blood to clot and then be centrifuged to separate the serum?

Accepted Answer

Red-top tube

Answer

Blue-top tube

Answer

Green-top tube

Answer

Lavender-top tube

Question 9

Which tube type is primarily used for blood transfusions, as it contains no additives and preserves the whole blood?

Accepted Answer

Whole blood tube

Answer

Serum tube

Answer

Plasma tube

Answer

Heparin tube

Question 10

Which type of blood collection tube is the most frequently used for routine blood tests and contains no additives, allowing for serum or plasma separation?

Accepted Answer

Red-top tube

Answer

Blue-top tube

Answer

Green-top tube

Answer

Lavender-top tube

Question 11

Which additive is specifically used in blood collection tubes to inhibit glycolysis and stabilize glucose levels?

Accepted Answer

Fluoride

Answer

Sodium citrate

Answer

EDTA

Answer

Sodium bicarbonate

Question 12

How do clot activators contribute to coagulation studies, and what is their mechanism for initiating the clotting process?

Accepted Answer

Clot activators trigger the conversion of prothrombin to thrombin, initiating the coagulation cascade.

Answer

Clot activators neutralize anticoagulants in the blood, allowing for efficient clot formation.

Answer

Clot activators prevent the breakdown of fibrin strands, ensuring stable clot formation.

Answer

Clot activators are essential components of all blood collection tubes.

Question 13

In some blood collection tubes, what is the primary function of the gel barrier?

Accepted Answer

Separates serum from cells

Answer

Preserves blood cells

Answer

Enhances coagulation

Answer

Prevents blood clotting

Question 14

Which type of blood collection tube utilizes a clot activator to facilitate the formation of a clot?

Accepted Answer

Red

Answer

Green

Answer

Blue

Answer

Lavender

Question 15

In blood collection tubes, fluoride serves the essential function of:

Accepted Answer

Preserves glucose levels

Answer

Enhances coagulation

Answer

Separates plasma from cells

Answer

Prevents hemolysis

Question 16

For hematology studies, the specific type of blood collection tube that should be used is:

Accepted Answer

EDTA

Answer

Heparin

Answer

Sodium Citrate

Question 17

Why is it crucial to maintain the correct ratio of blood to anticoagulant in blood collection tubes?

Accepted Answer

Ensures accurate test results

Answer

Facilitates specimen handling

Answer

Preserves blood cells

Answer

Prevents blood clotting

Question 18

Which of the following options is NOT a commonly used additive in blood collection tubes?

Accepted Answer

Alcohol

Answer

EDTA

Answer

Heparin

Answer

Sodium Citrate

Question 19

Which type of blood collection tube is specifically designed for blood cultures?

Accepted Answer

BACTEC

Answer

EDTA

Answer

Sodium Citrate

Question 20

What anticoagulant is present in EDTA tubes?

Accepted Answer

Ethylene Diamine Tetraacetic Acid (EDTA)

Answer

Heparin

Answer

Sodium Fluoride

Question 21

What is the primary function of the separator gel in blood collection tubes?

Accepted Answer

To separate serum from blood cells

Answer

To neutralize acids

Answer

To enhance sample stability

Answer

To prevent clotting

Question 22

For hematology testing, which type of blood collection tube is used?

Accepted Answer

EDTA

Answer

BACTEC

Answer

Sodium Citrate

Answer

Heparin

Question 23

Which additive is present in sodium fluoride blood collection tubes?

Accepted Answer

Sodium Fluoride

Answer

Heparin

Answer

Glucose

Answer

Ethylene Diamine Tetraacetic Acid (EDTA)

Question 24

What is the purpose of the clot activator in certain blood collection tubes?

Accepted Answer

To accelerate blood clotting

Answer

To neutralize acids

Answer

To prevent clotting

Answer

To enhance sample stability