QUESTIONS & VERIFIED CORRECT ANSWERS ||
GRADED A+
1. If a vein feels hard and thready like when palpated, then this vein may
be: sclerosed.
2. If the plunger on the syringe is pulled back too fast the specimen may
be: hemolyzed
3. When performing a heel puncture on an infant, proper technique includes-
: placing lancet flat against the skin on the medial or lateral plantar surface of heel.
4. what condition would most likely cause hemoconcentration?: Dehydration.
5. What can cause hematoma formation?: firmly anchoring vein in needle inser-
tion.
6. anticoagulant in green top tube: sodium heprin
7. what is preferred method for infant blood collection?: capillary
8. what tube is normally used to collect a serum sample?: red top
9. correct angle for the needle to be inserted into skin?: 30 degrees
10. why is it necessary to wipe first drop of blood away when performing a
capillary procedure?: to reduce interstitial fluid contamination
11. Alcohol should be allowed to dry completely prior to skin puncture to: pre-
vent lysis of red blood cells
12. the phlebotomist places blood specimen in circles on special filter paper,
for what test?: PKU
13. A falsely decreased blood alcohol level may be obtained if: the tube is only
partially filled
14. Following venipuncture, what should be applied to venipuncture site?: -
clean sterile gauze pad
15. When is a phlebotomist allowed to perform a venipuncture on an ankle
vein?: When all other options have been exhausted and the physician has given
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, approval.
16. By bracing the hand while holding the needle assembly against the pa-
tients arm you: prevent excess needle movement
17. When performing a capillary blood collection, the first drop of blood is
wiped away because: the first drop typically has more tissue fluid
18. What instrument may be used when trying to visualize the veins during
venipuncture: Venoscope
19. What is correct procedure when performing blood smear for leukocyte
alkaline phosphate (LAP)?: Perform skin puncture, wipe away the first drop of
blood & then touch slide to the next drop of blood.
20. How long should a tourniquet be placed around a patients arm?: no more
than one minute
21. Hemoconcentration of a specimen can be avoided by?: Removing the
tourniquet within one minute.
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