ETS

Question 1

Color-coded,________ are at the center of modern phlebotomy.

Answer 1

evacuated collection tubes

Question 2

are chemicals designed to promote or prevent certain changes in the blood sample.

Answer 2

additives

Question 3

are either thick rubber stoppers or rubber stoppers with plastic tops

Answer 3

tube tops

Question 4

The ________ minimizes the chance of an aerosol spray forming when the stopper is removed.

Answer 4

plastic top

Question 5

The tubes themselves are made of either

Answer 5

glass or shatter-resistant plastic

Question 6

Most tubes are _____ and thus are not only safer than glass for transportation, but also can withstand the extremely high forces inside a centrifuge.

Answer 6

plastic

Question 7

does not strongly activate platelets.

Answer 7

plastic

Question 8

which require platelet activation, are now usually collected in plastic tubes that contain a clot activator, although plain glass tubes are still being used in some circumstances or when the test is negatively affected by the presence of plastic.

Answer 8

Serum samples

Question 9

Tubes are evacuated so that a measured amount of blood will flow in easily. They are available in a variety of sizes, from _________ ml

Answer 9

2 to 15 mL

Question 10

Each test requires a particular minimum sample volume, which may range from less than _______ ml or more.

Answer 10

1 to 10 mL

Question 11

may have decreased vacuum, preventing a proper fill, or they may have additives that degrade with time.

Answer 11

Out-of-date tubes