Deck 24: Medical Laboratory Skills

Question 1

Contaminated needles must be disposed of into a:

A) biohazard bag.
B) sharps container.
C) metal garbage can.
D) glass jar.

Answer 1

sharps container.

Question 2

The presence or absence of a specific additive in a vacuum blood collection tube is indicated by the color of the:

A) label.
B) stopper.
C) tube.
D) box in which the tube was received.

Answer 2

stopper.

Question 3

Urinalysis reagent strips are used to perform which of the following?

A) Macroscopic analysis
B) Microscopic analysis
C) Chemical analysis
D) Color analysis

Answer 3

Chemical analysis

Question 4

Poisonous refuse or waste that is dangerous to living creatures is termed which of the following?

A) Biohazardous waste
B) Sharps waste
C) Isolation waste
D) Contaminated waste

Question 5

What type of skin cleansing is required when performing venipuncture for blood culture or blood-alcohol testing?

A) Seventy percent isopropyl alcohol preps
B) Povidone-iodine (Betadine) preps
C) Dry gauze or cotton balls
D) Skin cleansing is not recommended in this case.

Question 6

Which of the following are signs that a patient may be feeling faint during a venipuncture?
1) Pale complexion
2) Unable to respond verbally to questions
3) Ruddy complexion

A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3

Question 7

What is the standard size of a venipuncture needle?

A) 16 gauge
B) 18 gauge
C) 21 gauge
D) 40 gauge

Question 8

Which of the following are blood-borne pathogens with which health care workers are at risk of infection?
1) Hepatitis B
2) HIV
3) Tuberculosis

A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3

Question 9

Which type of protective barrier should be worn when uncapping filled evacuated tubes?

A) Shoe covers
B) Hair covers
C) Protective gowns
D) Splash shields

Question 10

Where should the tourniquet be applied when performing venipuncture at the antecubital fossa?

A) A hand's width above the elbow
B) A hand's width below the elbow
C) At the elbow
D) Near the shoulder

Question 11

A tourniquet should not be applied for more than:

A) 2 to 5 seconds
B) 30 seconds
C) 1 minute
D) 5 minutes

Question 12

When performing venipuncture,the needle should puncture the skin at about a ___-degree angle.

A) 5
B) 25
C) 40
D) 90

Question 13

What is the purpose of a tourniquet?

A) To hold the patient's arm still
B) To secure the vein in place
C) To cause the vein to distend
D) To cause the vein to rupture

Question 14

Standard precautions are used when drawing blood specimens to avoid the risk of:

A) contaminating the sample.
B) spilling the blood.
C) injuring the patient.
D) transmitting a blood-borne infection to the health care worker.

Question 15

If the collection tube fails to fill with blood during the venipuncture procedure,the most likely cause is which of the following?

A) Damage to the tube
B) Damage to the needle
C) Failure to secure the tourniquet correctly
D) Failure to place the tip of the needle correctly within the vein

Question 16

The vein most commonly used to draw blood specimens is the _____ vein.

A) median cubital
B) cephalic
C) basilic
D) saphenous

Question 17

What practices are in place to protect health care workers from infection with blood-borne pathogens carried by their patients?

A) Isolation
B) Standard Precautions
C) Centers for Disease Control
D) Homeland Security Council

Question 18

Before placing an adhesive bandage or tape to cover the puncture site,the limited operator should check to see if the patient is:

A) HIV positive.
B) still bleeding.
C) allergic to adhesives.
D) taking anticoagulant medications.

Question 19

During which of the following procedures should a limited operator wear protective gloves?
1) Transferring urine from one container to another
2) Performing venipuncture
3) Opening blood specimen tubes

A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3

Question 20

What is the first step to performing venipuncture?

A) Applying the tourniquet
B) Identifying the patient
C) Having the patient remove foreign objects from the mouth
D) Finding an appropriate vein

Question 21

Which of the following positive urinalysis tests should be brought to the physician's attention before discarding the sample?
1) Protein
2) Blood
3) Nitrite

A) 1 and 2 only
B) 1 and 3 only
C) 2 and 3 only
D) 1, 2, and 3

Question 22

The physician should be notified before urine is discarded if it is more than slightly hazy or tests positive for:

A) glucose.
B) fat.
C) alcohol.
D) chlorine.

Question 23

Rapid spinning of the urine in a centrifuge is a process used to:

A) facilitate chemical analysis.
B) separate sediment from liquid for microscopic analysis.
C) clarify the urine for accurate color analysis.
D) determine the blood glucose level.

Question 24

What specimen provides the greatest amount of diagnostic information on a urinalysis?

A) Sterile
B) First-morning
C) Random
D) Last-evening

Question 25

What is another name for urinalysis reagent strips?

A) Color strips
B) Dip strips
C) Reagent dips
D) Dipsticks

Question 26

If urinalysis is delayed more than 1 hour after the specimen is collected,the specimen should be:

A) discarded.
B) sent to a special laboratory for analysis.
C) capped and refrigerated.
D) analyzed as soon as possible and the time recorded in the report.

Question 27

What is the time frame in which analysis of a urine sample should be performed

A) As soon as possible
B) Any time after 1 hour, but no later than 5 hours after the collection time
C) Within 24 hours of the collection time
D) There is no recommended time frame in which urinalysis should be performed.

Question 28

What is the standard method for obtaining routine urine specimens?

A) Have the patient bring the specimen from home in a covered jar.
B) Catheterize the patient.
C) Collect all urine for 24 hours to get a complete sampling.
D) Use the clean-catch midstream specimen technique.