100% correct answers
If a vein feels hard and thready like when palpated, then this vein may be - correct answer ✔✔sclerosed.
If the plunger on the syringe is pulled back too fast the specimen may be - correct answer ✔✔hemolyzed
When performing a heel puncture on an infant, proper technique includes - correct answer ✔✔placing
lancet flat against the skin on the medial or lateral plantar surface of heel.
what condition would most likely cause hemoconcentration? - correct answer ✔✔Dehydration.
What can cause hematoma formation? - correct answer ✔✔firmly anchoring vein in needle insertion.
anticoagulant in green top tube - correct answer ✔✔sodium heprin
what is preferred method for infant blood collection? - correct answer ✔✔capillary
what tube is normally used to collect a serum sample? - correct answer ✔✔red top
correct angle for the needle to be inserted into skin? - correct answer ✔✔30 degrees
why is it necessary to wipe first drop of blood away when performing a capillary procedure? - correct
answer ✔✔to reduce interstitial fluid contamination
Alcohol should be allowed to dry completely prior to skin puncture to - correct answer ✔✔prevent lysis
of red blood cells
, the phlebotomist places blood specimen in circles on special filter paper, for what test? - correct answer
✔✔PKU
A falsely decreased blood alcohol level may be obtained if - correct answer ✔✔the tube is only partially
filled
Following venipuncture, what should be applied to venipuncture site? - correct answer ✔✔clean sterile
gauze pad
When is a phlebotomist allowed to perform a venipuncture on an ankle vein? - correct answer ✔✔When
all other options have been exhausted and the physician has given approval.
By bracing the hand while holding the needle assembly against the patients arm you - correct answer
✔✔prevent excess needle movement
When performing a capillary blood collection, the first drop of blood is wiped away because - correct
answer ✔✔the first drop typically has more tissue fluid
What instrument may be used when trying to visualize the veins during venipuncture - correct answer
✔✔Venoscope
What is correct procedure when performing blood smear for leukocyte alkaline phosphate (LAP)? -
correct answer ✔✔Perform skin puncture, wipe away the first drop of blood & then touch slide to the
next drop of blood.
How long should a tourniquet be placed around a patients arm? - correct answer ✔✔no more than one
minute
Hemoconcentration of a specimen can be avoided by? - correct answer ✔✔Removing the tourniquet
within one minute.
A colllapsed vein will cause a - correct answer ✔✔cessation of blood flow.