ASPT Specimen Collection Techniques 4

Question 1

A phlebotomist is asked to draw a specimen for a fasting glucose test. The patient says they had coffee with sugar 30 minutes ago. The correct action is to:

Accepted Answer

Reschedule the draw after a sufficient fasting period

Answer

Sugary coffee breaks the fast and will elevate glucose results; the draw should be rescheduled after the required fasting period.

Question 2

Which specimen type is collected in a green-top tube containing lithium heparin?

Accepted Answer

Plasma for chemistry tests

Answer

Lithium heparin green-top tubes are used to collect plasma for stat chemistry panels and other plasma-based assays.

Question 3

What is the correct lancet depth for an adult fingerstick to obtain an adequate sample while minimizing pain?

Accepted Answer

2.0 mm

Answer

A 2.0 mm depth is standard for adult fingerstick lancets, providing enough blood flow without excessive discomfort or tissue damage.

Question 4

When a patient has an IV line in the arm, blood should ideally be drawn from:

Accepted Answer

The opposite arm

Answer

Drawing from the opposite arm avoids IV fluid contamination of the specimen; if unavoidable, draw below the IV with the IV shut off for at least 2 minutes.

Question 5

Which of the following BEST describes the purpose of the order of draw?

Accepted Answer

To prevent additive carryover between tubes that could alter test results

Answer

The order of draw minimizes the risk of additive cross-contamination between tubes that could falsely alter coagulation, chemistry, or hematology results.

(ASPT) American Society of Phlebotomy Technicians Practice Test

(ASPT) American Society of Phlebotomy Technicians Practice Test

ASPT Specimen Collection Techniques 4