Question 1

How long must a donor wait to donate red blood cells again following a 2-unit red blood cell apheresis donation?

Accepted Answer

A 16-week deferral period is required following a 2-unit red blood cell apheresis donation.

Question 2

Autologous donors may not donate if they:

Accepted Answer

A risk of bacteremia would cause the autologous donor to be deferred.

Question 3

During the donor screening process, the potential donor's blood drop sinks to the bottom of the copper sulfate solution within 15 seconds. What is the interpretation of this test?

Accepted Answer

Using the specific gravity of a copper sulfate solution is a screening method to determine whether the hemoglobin and hematocrit are within limits. If the blood drop does not sink within 15 seconds, the donor's hemoglobin or hematocrit should be verified with a more precise measurement.

Question 4

If a prospective donor has participated in a plasmapheresis program, how long must he or she wait to donate whole blood?

Accepted Answer

Following apheresis procedures, there is a 48-hour deferral period.

Question 5

Which type of autologous donation procedure is the most common for most types of surgery?

Accepted Answer

Donating blood for surgery is typically a preoperative donation.

Question 6

Which of the following contributes to permanent rejection status of a donor?

Accepted Answer

A positive test for hepatitis B core antigen is a permanent deferral.

Question 7

Blood collected from a therapeutic phlebotomy is:

Accepted Answer

The Food and Drug Administration requires a variance from the blood center to allow a blood unit from a donor with genetic hemochromatosis to be placed into inventory.

Question 8

Which of the following is not a cause for temporary deferment of a whole blood donor?

Accepted Answer

Aspirin is acceptable for whole blood donation. If platelets are prepared from the unit, they cannot be the sole source of platelets for a recipient.

Question 9

Following donation, how long does it take to replace the fluid lost from giving whole blood?

Accepted Answer

Fluid replacement takes about 3 days.

Question 10

What is the minimum hemoglobin level for a potential allogeneic donor?

Accepted Answer

Minimum hemoglobin is 12.5 g/dL for both male and female donors.

Question 11

A 58-year-old woman revealed that she had experimented with intravenous drugs as a teenager. What would be the acceptable deferral period, if any, for this potential donor?

Accepted Answer

Use of a needle to administer nonprescription drugs is an indefinite deferral.

Question 12

How often can a person donate a unit of whole blood for a directed donation?

Accepted Answer

Directed donors must follow the same guidelines as allogeneic donors.

Question 13

Allogeneic whole blood donors may donate every __________ days.

Accepted Answer

Whole blood donation is restricted to every 56 days.

Question 14

Which one of the following histories represents an acceptable donor?

Accepted Answer

The answer of Which one of the following histories represents...

Question 15

It is necessary to mix the unit frequently during the donation process to:

Accepted Answer

Mixing of the anticoagulant avoids clot formation in the unit.

Quiz 9: Donor Selection and Phlebotomy