CPCT Phlebotomy and Specimen Collection 3

Question 1

What does a light blue-top tube contain, and what test is it used for?

Accepted Answer

Sodium citrate; used for coagulation studies

Answer

Heparin; used for electrolytes

Answer

EDTA; used for CBC

Answer

Clot activator; used for chemistry panels

Question 2

What is the minimum number of times a lavender-top tube should be inverted after collection?

Accepted Answer

8 to 10 times

Answer

2 to 3 times

Answer

5 to 6 times

Answer

15 times

Question 3

Which of the following specimens must be kept warm (at body temperature) after collection?

Accepted Answer

Cryoglobulin specimen

Answer

CBC sample

Answer

Cold agglutinin specimen

Answer

Routine chemistry panel

Question 4

What is the proper disposal method for used needles after venipuncture?

Accepted Answer

Place uncapped needle directly into a sharps container

Answer

Recap the needle and place in regular trash

Answer

Wrap in gauze and place in biohazard bag

Answer

Bend the needle before disposal

Question 5

Which laboratory test requires a fasting specimen from the patient?

Accepted Answer

Fasting blood glucose

Answer

Complete blood count (CBC)

Answer

Prothrombin time (PT)

Answer

Blood type and crossmatch

Question 6

When collecting a blood culture specimen, which site preparation technique is used?

Accepted Answer

Povidone-iodine or chlorhexidine after alcohol

Answer

70% isopropyl alcohol only

Answer

Soap and water followed by alcohol

Answer

No antiseptic to avoid contamination

Question 7

What does 'QNS' mean on a laboratory specimen rejection label?

Accepted Answer

Quantity Not Sufficient

Answer

Quality Not Satisfactory

Answer

Quick Notification Specimen

Answer

Quality Needs Submission