CCMA Phlebotomy and Specimen Collection 4

Question 1

A patient has small, fragile veins. Which needle gauge is most appropriate for venipuncture?

Accepted Answer

23 gauge

Answer

A 23-gauge needle is the smallest standard venipuncture needle and is best suited for fragile or small veins to minimize trauma.

Question 2

Which specimen type is required for a cortisol level that must reflect diurnal variation?

Accepted Answer

Timed blood draw with noted collection time

Answer

Cortisol levels fluctuate throughout the day, so the exact collection time must be documented to interpret results correctly.

Question 3

When collecting a blood culture, what is the MOST important step to prevent contamination?

Accepted Answer

Use chlorhexidine or iodine and allow it to dry completely

Answer

Proper antiseptic preparation with chlorhexidine or iodine that is allowed to fully dry significantly reduces the risk of skin flora contaminating blood culture bottles.

Question 4

A specimen labeled 'STAT' is received in the lab. What does this indicate?

Accepted Answer

Specimen requires immediate processing

Answer

STAT orders require immediate processing because the results are needed urgently for patient care decisions.

Question 5

Which tube should be drawn FIRST when collecting a coagulation study along with other tests?

Accepted Answer

Sodium citrate (light blue)

Answer

Sodium citrate tubes for coagulation studies must be drawn before other additive tubes to prevent contamination that could alter clotting results.

CCMA - Certified Clinical Medical Assistant Practice Test

CCMA - Certified Clinical Medical Assistant Practice Test

CCMA Phlebotomy and Specimen Collection 4