Phlebotomy Test Special Collection Procedures 2

Question 1

When collecting a neonatal bilirubin specimen, what is the primary concern regarding light exposure?

Accepted Answer

Light degrades bilirubin, causing falsely low results

Answer

Light increases bilirubin concentration

Answer

Light causes hemolysis of the specimen

Answer

Light promotes bacterial growth in the tube

Question 2

A glucose tolerance test (GTT) requires the patient to fast for how long before the baseline draw?

Accepted Answer

8–12 hours

Answer

4 hours

Answer

2 hours

Answer

24 hours

Question 3

Which needle gauge is most appropriate for a blood culture collection to minimize contamination risk while maintaining adequate flow?

Accepted Answer

21–22 gauge

Answer

18 gauge

Answer

25 gauge

Answer

16 gauge

Question 4

When performing a capillary blood gas collection from a neonate's heel, what must be done to the heel before puncture?

Accepted Answer

Warm the heel to 42°C (107.6°F) for at least 3–5 minutes

Answer

Apply ice to constrict capillaries

Answer

Clean with povidone-iodine only

Answer

Apply a tourniquet above the ankle

Question 5

For a therapeutic drug monitoring (TDM) trough level, blood should be drawn at which time?

Accepted Answer

Immediately before the next scheduled dose

Answer

30 minutes after drug administration

Answer

2 hours after drug administration

Answer

At any time during the dosing interval

Question 6

Which collection method is used to diagnose malaria by examining thick and thin blood smears?

Accepted Answer

Fingerstick or venipuncture with smears made immediately

Answer

Venipuncture into an EDTA tube only

Answer

Arterial puncture into a heparinized syringe

Answer

Urine midstream catch

Question 7

A STAT arterial blood gas (ABG) sample collected in a heparinized syringe must be transported to the lab within what time frame if kept at room temperature?

Accepted Answer

30 minutes

Answer

60 minutes

Answer

4 hours

Answer

15 minutes