Question 1

The correct order of the four stages of the coagulation or hemostasis process is:

Accepted Answer

A)  Retraction or tightening of the clot; platelets become sticky,clump together,and adhere to the injured vessel wall; degradation or breakdown of the clot; and the extrinsic,intrinsic,and common pathway activate and proceed to complete the clot. 
B)  Platelets become sticky,clump together,and adhere to the injured vessel wall; retraction or tightening of the clot; degradation or breakdown of the clot; and the extrinsic,intrinsic,and common pathway activate and proceed to complete the clot. 
C)  Platelets become sticky,clump together,and adhere to the injured vessel wall; the extrinsic,intrinsic,and common pathway activate and proceed to complete the clot; retraction or tightening of the clot; and degradation or breakdown of the clot. 
D)  The extrinsic,intrinsic,and common pathway activate and proceed to complete the clot; retraction or tightening of the clot; degradation or breakdown of the clot; and platelets become sticky,clump together,and adhere to the injured vessel wall.

Question 2

Samples collected in serum separator tubes are most frequently delivered to:

Accepted Answer

A)  immunohematology. 
B)  serology. 
C)  hematology. 
D)  chemistry.

Question 3

Yellow stopper tubes containing sodium polyanethol sulfonate are used for which of the following?

Accepted Answer

A)  Blood cultures 
B)  Lead testing 
C)  Human leukocyte antigen (HL
A)  typing 
D)  Paternity testing

Question 4

The part of a syringe that is withdrawn after the vein is entered is the:

Accepted Answer

A)  barrel. 
B)  hub. 
C)  shield. 
D)  plunger.

Question 5

Plasma separator tubes (PSTs) contain the anticoagulant ethylenediaminetetraacetic acid (EDTA).

Accepted Answer

A) True 
 B)False

Question 6

The purpose of sodium fluoride in gray stopper tubes is to:

Accepted Answer

A)  prevent hemolysis. 
B)  prevent clotting. 
C)  preserve glucose. 
D)  maintain cellular morphology.

Question 7

Most anticoagulants in blood collection tubes prevent clotting by:

Accepted Answer

A)  binding calcium. 
B)  acting as an antithrombin agent. 
C)  binding fibrinogen. 
D)  releasing heparin.

Question 8

The ratio of blood to anticoagulant in a light blue stopper tube is:

Accepted Answer

A)  2:1. 
B)  5:1. 
C)  9:1. 
D)  10:1.

Question 9

A blood-alcohol test should not be collected in a gray stopper tube.

Accepted Answer

A) True 
 B)False

Question 10

What information does the color coding of evacuated tubes provide?

Accepted Answer

A)  Presence of an anticoagulant 
B)  Type of sample collected 
C)  Need to invert the tube 
D)  All of the above

Question 11

Lavender stopper tubes are used for which of the following laboratory departments?

Accepted Answer

A)  Hematology 
B)  Coagulation 
C)  Microbiology 
D)  Chemistry

Question 12

Some evacuated tubes are designed not to completely fill.

Accepted Answer

A) True 
 B)False

Question 13

When using a winged blood collection set,a light blue stopper tube should be collected first.

Accepted Answer

A) True 
 B)False

Question 14

Needle protection devices are not necessary when using a syringe.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following tubes contains an anticoagulant that inhibits thrombin?

Accepted Answer

A)  Lavender 
B)  Light blue 
C)  White 
D)  Green

Question 16

The main anticoagulant for coagulation studies is:

Accepted Answer

A)  ethylenediaminetetraacetic acid (EDT
A) . 
B)  sodium citrate. 
C)  heparin. 
D)  oxalate.

Question 17

To prevent leakage of blood when tubes are changed,evacuated tube needles:

Accepted Answer

A)  have a blunting device. 
B)  use a rubber sheathe. 
C)  are only used for single tube collections. 
D)  are used with safety holders.

Exam 2: Venipuncture Equipment

The correct order of the four stages of the coagulation or hemostasis process is:

Samples collected in serum separator tubes are most frequently delivered to:

Yellow stopper tubes containing sodium polyanethol sulfonate are used for which of the following?

The part of a syringe that is withdrawn after the vein is entered is the:

Plasma separator tubes (PSTs) contain the anticoagulant ethylenediaminetetraacetic acid (EDTA).

The purpose of sodium fluoride in gray stopper tubes is to:

Most anticoagulants in blood collection tubes prevent clotting by:

The ratio of blood to anticoagulant in a light blue stopper tube is:

A blood-alcohol test should not be collected in a gray stopper tube.

What information does the color coding of evacuated tubes provide?

Lavender stopper tubes are used for which of the following laboratory departments?

Some evacuated tubes are designed not to completely fill.

When using a winged blood collection set,a light blue stopper tube should be collected first.

Needle protection devices are not necessary when using a syringe.

Which of the following tubes contains an anticoagulant that inhibits thrombin?

The main anticoagulant for coagulation studies is:

To prevent leakage of blood when tubes are changed,evacuated tube needles: