ASPT Blood Collection Equipment & Supplies 3

Question 1

According to CLSI guidelines, which specimen should be collected FIRST in the order of draw?

Accepted Answer

Blood culture bottles

Answer

EDTA (lavender) tube

Answer

Heparin (green) tube

Answer

Serum separator tube (gold)

Question 2

Which tube is collected immediately after blood culture bottles in the CLSI order of draw?

Accepted Answer

Sodium citrate (light blue)

Answer

EDTA (lavender)

Answer

Heparin (green)

Answer

Serum tubes (red/gold)

Question 3

What is the consequence of collecting a light blue (sodium citrate) tube AFTER a green (heparin) tube?

Accepted Answer

Heparin carryover can falsely prolong coagulation times

Answer

No significant effect on results

Answer

Sodium citrate neutralizes the residual heparin

Answer

Results will be falsely shortened

Question 4

Which equipment is used to collect arterial blood gas (ABG) specimens?

Accepted Answer

Pre-heparinized ABG syringe

Answer

Green-top heparin evacuated tube

Answer

Lavender-top EDTA evacuated tube

Answer

Red-top clot tube

Question 5

What is the correct method for disposing of a contaminated needle immediately after venipuncture?

Accepted Answer

Drop it directly into an approved sharps container without recapping

Answer

Recap it with one hand and place in regular trash

Answer

Bend or break the needle to deactivate it

Answer

Remove it from the holder and place it in a biohazard bag

Question 6

The royal blue-top tube is specifically designed for which category of laboratory testing?

Accepted Answer

Trace element and toxicology testing

Answer

Routine hematology

Answer

Coagulation studies

Answer

Blood culture collection

Question 7

Which action during syringe blood collection is MOST likely to cause hemolysis?

Accepted Answer

Pulling the plunger back too rapidly

Answer

Using an appropriately sized needle for the vein

Answer

Collecting blood at a steady, moderate pace

Answer

Gently inverting the tube after transferring blood