PHLEBOTOMY EXAM WITH CORRECT
ANSWERS /4TH EDITION
1. A patient may be placed in protective isolation if he or she has: -
ANSWER-Sever Burns
2. Which of the following three tests are most affected by hemolysis? -
ANSWER-Potassium, magnesium, LDH
3. What is the minimum amount of blood a phlebotomist should collect if
a test requires 1 mL of serum and the laboratory requires a specimen
that will yield 2.5 times the amount of serum or plasma required to
perform the test? - ANSWER-5 mL
4. A physician has ordered a fasting triglyceride level on an outpatient.
How long should the patient fast before the specimen is collected? -
ANSWER-12 hours
5. A very busy phlebotomist misidentifies the patient when collecting a
specimen for transfusion preparation. The possible misdiagnosis of
blood type could cause the patient's death. If the phlebotomist's action
results in injury, the action could be perceived as: - ANSWER-a type of
negligence
6. A new unit clerk relays an order for a CBC, platelet count, Hgb, and
HCT on the same patient for collection at the same time. How many
tubes should the phlebotomist collect? - ANSWER-1
7. Which of the following additives prevents coagulation by inhibiting
thrombin? - ANSWER-heparin
,8. A patient calls the laboratory for the results of her tests. Her results are
all in the normal range. She should be told: - ANSWER-to call her
physician's office for the results
9. A phlebotomist is sent to collect a carotene specimen on a patient.
What special handling, if any, is required for the specimen? - ANSWER-
protect the specimen from light
10. When palpating for a vein before venipuncture, how is an artery
distinguished from a vein? - ANSWER-Arteries have a pulse that can be
felt
11. When performing a bleeding time test, which of the following can
cause a falsely prolonged result? - ANSWER-disturbing the site of
incision
12. When a protime specimen is spun in the centrifuge, the liquid
that separates from the cells is called: - ANSWER-plasma
13. A postprandial glucose test is collected: - ANSWER-2 hours after
a meal
14. If the following specimens were all requested for collection at the
same time from different patients, which one would have the highest
priority? - ANSWER-STAT lytes in the ER
15. It is important to fill anticoagulant tubes until the vacuum is
exhausted to ensure that there is: - ANSWER-a proper blood-to-additive
ratio
16. The best tube to use to collect a copper specimen is a: -
ANSWER-royal blue top
, 17. A phlebotomist has tried two times to collect a protime specimen
from a patient with difficult veins, collecting a partial tube each time.
What is the appropriate action for the phlebotomist to take? - ANSWER-
ask another phlebotomist to attempt to collect the specimen
18. A yellow top tube containing sodium polyanethole sulfonate
(SPS) solution is sometimes used to collect a specimen for: - ANSWER-
blood cultures
19. A glucose-6-phosphate dehydrogenase test is most likely to be
ordered in the diagnosis of: - ANSWER-hemolytic anemia
20. Finger and heel puncture specimens are called capillary
specimens because the blood: - ANSWER-comes from the capillary bed
21. The waiting room is crowed, and an outpatient had been
standing for a prolonged period before being called into the drawing
room. Of the following tests that are being collected, which will be least
affected as a result? - ANSWER-Rh type
22. A phlebotomist encounters problems during a draw and redirects
the needle several times before obtaining blood. Which of the following
tests will be most affected by this complication? - ANSWER-
prothrombin
23. Without knowing anything else about it, which of the following
urine specimens would most likely be suitable for culture? - ANSWER-
clean-catch
ANSWERS /4TH EDITION
1. A patient may be placed in protective isolation if he or she has: -
ANSWER-Sever Burns
2. Which of the following three tests are most affected by hemolysis? -
ANSWER-Potassium, magnesium, LDH
3. What is the minimum amount of blood a phlebotomist should collect if
a test requires 1 mL of serum and the laboratory requires a specimen
that will yield 2.5 times the amount of serum or plasma required to
perform the test? - ANSWER-5 mL
4. A physician has ordered a fasting triglyceride level on an outpatient.
How long should the patient fast before the specimen is collected? -
ANSWER-12 hours
5. A very busy phlebotomist misidentifies the patient when collecting a
specimen for transfusion preparation. The possible misdiagnosis of
blood type could cause the patient's death. If the phlebotomist's action
results in injury, the action could be perceived as: - ANSWER-a type of
negligence
6. A new unit clerk relays an order for a CBC, platelet count, Hgb, and
HCT on the same patient for collection at the same time. How many
tubes should the phlebotomist collect? - ANSWER-1
7. Which of the following additives prevents coagulation by inhibiting
thrombin? - ANSWER-heparin
,8. A patient calls the laboratory for the results of her tests. Her results are
all in the normal range. She should be told: - ANSWER-to call her
physician's office for the results
9. A phlebotomist is sent to collect a carotene specimen on a patient.
What special handling, if any, is required for the specimen? - ANSWER-
protect the specimen from light
10. When palpating for a vein before venipuncture, how is an artery
distinguished from a vein? - ANSWER-Arteries have a pulse that can be
felt
11. When performing a bleeding time test, which of the following can
cause a falsely prolonged result? - ANSWER-disturbing the site of
incision
12. When a protime specimen is spun in the centrifuge, the liquid
that separates from the cells is called: - ANSWER-plasma
13. A postprandial glucose test is collected: - ANSWER-2 hours after
a meal
14. If the following specimens were all requested for collection at the
same time from different patients, which one would have the highest
priority? - ANSWER-STAT lytes in the ER
15. It is important to fill anticoagulant tubes until the vacuum is
exhausted to ensure that there is: - ANSWER-a proper blood-to-additive
ratio
16. The best tube to use to collect a copper specimen is a: -
ANSWER-royal blue top
, 17. A phlebotomist has tried two times to collect a protime specimen
from a patient with difficult veins, collecting a partial tube each time.
What is the appropriate action for the phlebotomist to take? - ANSWER-
ask another phlebotomist to attempt to collect the specimen
18. A yellow top tube containing sodium polyanethole sulfonate
(SPS) solution is sometimes used to collect a specimen for: - ANSWER-
blood cultures
19. A glucose-6-phosphate dehydrogenase test is most likely to be
ordered in the diagnosis of: - ANSWER-hemolytic anemia
20. Finger and heel puncture specimens are called capillary
specimens because the blood: - ANSWER-comes from the capillary bed
21. The waiting room is crowed, and an outpatient had been
standing for a prolonged period before being called into the drawing
room. Of the following tests that are being collected, which will be least
affected as a result? - ANSWER-Rh type
22. A phlebotomist encounters problems during a draw and redirects
the needle several times before obtaining blood. Which of the following
tests will be most affected by this complication? - ANSWER-
prothrombin
23. Without knowing anything else about it, which of the following
urine specimens would most likely be suitable for culture? - ANSWER-
clean-catch
