CHAPTER 8

Question 1

which of the following needles has the smallest diameter?

Answer 1

23-gauge (the higher number, the smaller the needles)

Question 2

which of the following tubes contains an anticoagulant that inhibits thrombin?

Answer 2

green stopper

Question 3

EDTA, sodium citrate, and potassium oxalate anticoagulant prevents blood clotting in blood collection tubes by;

Answer 3

binding calcium

Question 4

all of the following can be used to collect a serum specimen EXCEPT:

Answer 4

PST (plasma separator tube)

Question 5

which tube additive preserves glucose?

Answer 5

sodium fluoride

Question 6

the stopper colored tube that must always be filled to the correct ratio is:

Answer 6

light blue stopper tube

Question 7

which of the following is the CLSI acceptable order of tube draw?

Answer 7

light blue, light green, and lavender

Question 8

the winged blood collection set is primarily used for?

Answer 8

difficult and hand veins

Question 9

the primary antiseptic for routine venipuncture is:

Answer 9

betadine

Question 10

using evacuated tubes past their expiration date may result in:

Answer 10

all of the above

Question 11

are primarily used for molecular diagnostics but can be used for myocardial infarction

Answer 11

white top

Question 12

contain the anticoagulant sodium citrate

Answer 12

light blue top

Question 13

buffered sodium citrate are used for westergren sedimentation rates

Answer 13

black top

Question 14

the anticoagulant heparin combined with sodium, lithium, or ammonium ion.

Answer 14

green top