Question 1

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

Accepted Answer

Minimum hemoglobin is 12.5 g/dL for female donors.

Question 2

Which type of autologous donation procedure is most common for the majority of surgeries?

Accepted Answer

Donating blood for surgery is typically a preoperative donation.

Question 3

What is the purpose of a "diversion pouch" used when collecting blood from a donor?

Accepted Answer

A diversion pouch is used in order to avoid contamination of the blood product with the initial blood that may contain bacteria from the skin.

Question 4

Following delivery,what is the deferral time for donating a unit of whole blood?

Accepted Answer

Pregnancy has a 6-week deferral time.

Question 5

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

Accepted Answer

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

Question 6

A male donor has a reactive nucleic acid test for hepatitis C.What kind of deferral is assigned to this donor?

Accepted Answer

A permanent deferral is based on high-risk behavior or a positive test result.

Question 7

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 8

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 9

Why is it necessary to mix the unit frequently during the donation process?

Accepted Answer

Mixing of the anticoagulant avoids clot formation in the unit.

Question 10

Allogeneic whole blood donors may donate every __________ days.

Accepted Answer

Whole blood donation is restricted to every 56 days.

Question 11

A 21-year-old college student wishes to participate in the "double red" program at the local blood center by donating red blood cells collected by apheresis.What is the minimum height and weight requirement that she must meet?

Accepted Answer

RBCs collected by apheresis must meet the FDA requirement of 5'5",150 lbs for women and 5'1",130 lbs for men.

Question 12

Before donation,the intended venipuncture site must be cleaned with:

Accepted Answer

FDA guidelines require the arm to be cleaned with iodine compounds or,in the case of sensitivity to iodine,alternate solutions are suggested in the AABB technical manual.

Question 13

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 14

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)for placement into inventory.

Question 15

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 16

A 58-year-old woman revealed that she had experimented with intravenous drugs as a teenager.Is she an acceptable donor?

Accepted Answer

Use of a needle to administer nonprescription drugs is a permanent deferral.

Question 17

Which one of the following histories represents an acceptable male donor?

Accepted Answer

The others are unacceptable temperature,unacceptable hematocrit,and unacceptable blood pressure.

Question 18

Below are the results of the medical screening for a prospective female donor:
Age: 16
Hematocrit: 35%
Temperature: 37.2° C
Hemoglobin: 12.0 g/dL
History: HPV immunization,1 week ago
How many of the above results would exclude this donor from donating?

Accepted Answer

Hematocrit level must be 38% or above.Hemoglobin must be 12.5 g/dL or above.Temperature is acceptable (<37.5° C)and toxoid immunization has no deferral.

Question 19

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 (i.e.,apheresis platelet).

Question 20

Autologous donors may not donate if they:

Accepted Answer

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

Quiz 13: Donor Selection and Phlebotomy