Phlebotomy order of draw questions

Which organization is responsible for recommending an order of draw?

CLSI

.Which of the following is the correct order of collection for blood obtained by skin puncture?

EDTA, plasma additive tubes, serum tubes

You have orders to collect a CBC, type and screen, RPR, and basic metabolic panel. Using the test directory provided what tube types do you collect and in what order do you collect them?

Gold shield, light green shield, lavendar shield, pink shield

Why is plasma preferred over serum for many STAT lab tests?

Patient results can be available quicker

Which one of the following evacuated tube types requires no mixing at the time of collection?

Red stopper, silicone coated

In this hypothetical situation, a tube manufacturer has made a tube with a purple shield over a yellow stopper. All you know about the tube is that is contains EDTA. Where is this tube placed in the recommended order of draw?

between a green stopper tube and a grey one

In which of the following situations would you collect a discard tube before collecting a light blue tube for a protime/INR?

blood collected using a winged infusion set

If a gray stopper tube is collected before a lavender shield tube, which of the following could occur?

distortion of blood cells on WBC differentials

The phlebotomy order of draw is reversed when blood is collected with a syringe.

false

If a lavender shield tube is collected before a light green shield tube, which of the following could occur?

falsely elevated potassium test results

Which one of the following tube types is used to collect blood for platelet function studies?

light blue shield

Fill volume is critical in all of the following tube types EXCEPT __________.

orange shield

If you have an order to collect blood cultures and a trace metal analysis at the same time, which one of the following is most appropriate?

perform the venipuncture and draw the royal blue tube followed by the blood cultures

.You have the following tube types on your tray: green shield, light green shield, pink shield, red shield, red/black stopper, light blue shield, and gray shield. You are collecting a hemoglobin and hematocrit with the last lavender shield tube. Blood ceases to flow into this tube almost immediately after the venipuncture. What tube on your tray could you use as a substitute for the lavender shield tube?

pink shield

If an orange shield tube is collected before a light blue stopper, which of the following could occur?

shortened PT time test results

You have orders to collect a type and crossmatch, glucose, basic metabolic panel, and acid fast bacteria blood culture. Using the test directory provided what tube types do you collect and in what order do you collect them?

yellow SPS stopper, light green, pink, gray