Phlebotomy Ch 12 Quiz

1) The most reliable labeling method for avoiding transcription errors in specimen collection is:
A) handwritten labels at the patient's bedside
B) bar-coded computerized labels
C) addressograph labels
D) none of the above

b

2) The TAT refers to:
A) the time it takes for laboratory test results to be completed
B) the patient's temperature at 10:00 A.M.
C) transfusion-associated testing
D) delays due to transportation of a specimen

a

3) Which of the following is a possible occurrence if a blood specimen tube for hematology tests is filled correctly but not mixed long enough?
A) Hemolysis will occur.
B) Hemoconcentration will occur.
C) Tiny clots will form in the specimen.
D) The speci

c

4) Which of the following is a possible occurrence if a blood specimen tube for hematology tests is filled correctly but mixed too long or too vigorously?
A) Hemolysis will occur.
B) Hemoconcentration will occur.
C) Tiny clots will form in the specimen.
D

a

5) Which of the following factors should be considered when pneumatic tube systems are used for transporting specimens?
A) mechanical reliability and distance of transport
B) speed of carrier and landing mechanism
C) effect on the chemical and cellular co

d

6) Glycolytic action refers to:
A) hemolysis
B) hemostasis
C) breakdown of glucose
D) breakdown of hemoglobin

c

7) Serum should be transported to the laboratory for testing and separated from blood cells within which of the following time periods to prevent erroneous test results?
A) 5 hours
B) 4 hours
C) 3 hours
D) as soon as possible

d

8) Cooling a blood specimen causes:
A) slowing of metabolic processes
B) hemolysis
C) hemoconcentration
D) hemostasis

a

9) How should the specimen be transported if blood gases can be analyzed within 30 minutes from the time of the specimen collection?
A) in a plastic syringe at room temperature
B) in a plastic syringe on ice
C) in a heating block
D) in an amber biohazard

a

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?
A) It decreases the loss of gases from the specimen.
B) It promotes coagulatio

a

11) Which of the following is considered confidential patient information?
A) clinical laboratory results of a patient
B) the name of the phlebotomist who draws a specimen
C) the name of the laboratory supervisor
D) the name of the patient's physician

a

12) Assays that require a chilled specimen include:
A) glucose, cholesterol, and prostatic-specific antigen
B) gastrin, ammonia, catecholamine, and lactic acid
C) tests for electrolytes
D) all hematology tests

b

13) To chill a blood specimen as it is transported, the health care worker should use:
A) tepid water
B) a small freezer unit
C) icy water or commercial ice pack
D) blocks of ice
b

c

14) Specimens that require protection from light include those for:
A) CBC, diff, and platelet counts
B) PT and PTTs
C) bilirubin and vitamin B12
D) hormone analyses

c

15) 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:
A) human or animal feces
B) body fluids
C) tissues
D) all of the above

d

16) When designing a report form for laboratory results, what key elements would not be included?
A) patient and physician identification
B) date and time of collection
C) reference ranges
D) physician's home address and phone number

d

17) Specimens being tested would not usually require centrifugation in which of the following areas?
A) chemistry
B) coagulation and hematology
C) blood bank donors
D) urinalysis

b

18) For specimens that require centrifugation, serum or plasma should be removed from the cells within what period of time?
A) 5 hours
B) 4 hours
C) 3 hours
D) 2 hours

d

19) It is preferable to make blood smears from EDTA specimens within what period of time after the specimen is collected?
A) 4 hours
B) 3 hours
C) 2 hours
D) 1 hour

d

20) How long does it usually take for a serum specimen (without additives) to form a clot?
A) 5-10 minutes
B) 15-20 minutes
C) 20-25 minutes
D) 30-60 minutes

d

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

false

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

false

3) A patient's stress/anxiety can affect the pre-examination phase of laboratory testing.

true

4) Blood specimen tubes without additives do not require mixing.

true

5) It is preferable for a blood specimen tube to be maintained in a vertical position during handling after the venipuncture.

true

6) In hospitals, for early-morning blood collections, most patients should be fasting.

true

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

true

8) Ice packs should be used when transporting coagulation specimens.

false

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

false

10) Aluminum foil can be used to protect specimens from heat.

false

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

leakproof

2) An amber-brown biohazard bag is used for transporting specimens that will decompose if they are exposed to ________.

light

3) Sensitivity to light is called ________.

photosensitivity

4) ________ specimens may be centrifuged immediately.

plasma

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

aliquot

6) Blood specimens from patients on ________ therapy will take longer to clot.

anticoagulant

7) The ________ of specimen tubes should remain in place during centrifugation.

stopper or closure or cap

8) Room temperature is 22-25� ________.

Celsius

9) Refrigeration temperature for specimen storage should be between ________ and 8�C.

2

10) All specimen refrigerators should be labeled with ________ warnings.

biohazard