Chapter 12

Question 1

The most reliable labeling methods for avoiding transcription errors in specimen collection is

Answer 1

Bar coded computerized labels

Question 2

The TAT refers to

Answer 2

The time is takes for laboratory test results to be completed

Question 3

A possible occurrence if a blood specimen tube for hematology tests is filled correctly but not mixed long enough

Answer 3

Tiny clots will form in the specimen

Question 4

A possible occurrence if a blood specimen tube for hematology tests is filled correctly but mixed too long or too vigorously

Answer 4

Hemolysis will occur

Question 5

Factors that should be considered when pneumatic tube systems are used for transporting specimens

Answer 5

All of the above

Question 6

Glycolytic action refers to

Answer 6

Breakdown of glucose

Question 7

Serum should be transported to the laboratory for testing and separated from blood cells within this time period to prevent erroneous test results

Answer 7

As soon as possible

Question 8

Cooling a blood specimen causes

Answer 8

Slowing of metabolic processes

Question 9

How should the specimen be transported if blood gases can be analyzed within 30 minutes from the time of specimen collection

Answer 9

In a plastic syringe at room temperature

Question 10

If blood gases analysis cannot be analyzed within 30 minutes, why should the health care worker use an airtight container with icy water to transport the arterial specimen

Answer 10

It decreases the loss of gases from the specimen

Question 11

Assays that require a chilled specimen include

Answer 11

Gastric, ammonia, catecholamine, and lactic acid

Question 12

To chill a blood specimen as it is transported, the health care worker should use

Answer 12

Icy water or commercial ice pack

Question 13

Specimens that require protection from light include those for

Answer 13

Bilirubin and vitamin b12

Question 14

Specimens other than blood may need to be transported by health care workers using special handling procedures. In the laboratory department, these specimens may include

Answer 14

All of the above

Question 15

When designing a report form for laboratory test results, key elements that would not be included are

Answer 15

Physicians home address and phone number

Question 16

Specimens being tested in which of the following areas would not usually require centrifugation

Answer 16

Coagulation and hemoatology

Question 17

For specimens that require centrifugation, serum or plasma should be removed from the cells weighing what period of time

Answer 17

2 hours

Question 18

It is preferable to make blood smears from EDTA specimens weighing what period of time after the specimen is collected

Answer 18

1 hour

Question 19

How long does it usually take for a serum specimen (without additives) to form a clot

Answer 19

30-60 minutes

Question 20

It is best to mix a blood specimen in an additive tube 60 minutes after the venipuncture has occurred

Answer 20

False

Question 21

It is important to shake the specimen tube vigorously to thoroughly mix blood with an additive

Answer 21

False

Question 22

A péguenla stress/anxiety can affect the pre-examination phase of laboratory testing

Answer 22

True

Question 23

Blood specimen tubes without additives do not require mixing

Answer 23

True

Question 24

Is is preferable for a blood specimen tube to be maintained in a vertical position during handling after the venipuncture

Answer 24

True

Question 25

In hospitals, for early morning blood collections, most patients should be fasting

Answer 25

True

Question 26

Blood culture specimens should be delivered to the laboratory as soon as possible

Answer 26

True

Question 27

Ice packs should be used when transporting coagulation specimens

Answer 27

False

Question 28

Coagulation specimens can be used for analysis even if they are clotted

Answer 28

False

Question 29

Aluminum foil can be used to protect experiments from heat

Answer 29

False

Question 30

Most laboratories require blood specimens to be transported in a ________ plastic biohazard bag

Answer 30

Leakproof

Question 31

An amber-brown biohazard bag is used for transporting specimens that will decompose if they are exposed to ______

Answer 31

Light

Question 32

Sensitivity to light is called _______

Answer 32

Photosensitivity

Question 33

_______ specimens may be centrifuged immediately

Answer 33

Plasma

Question 34

An ________ is a small portion of a blood specimen that is separated for additional testing

Answer 34

Aliquot

Question 35

Blood specimens from patients on _______ therapy will take longer to clot

Answer 35

Anticoagulant

Question 36

The __________ of specimen tubes should remain in place during centrifugation

Answer 36

Stopper/cap

Question 37

Room temperature for specimen storage should be between ______ and 8 degrees C.

Answer 37

2

Question 38

All specimen refrigerators should be labeled with _______ warnings

Answer 38

Biohazard