Question 1

What is the advantage of testing donor blood using nucleic acid test methods?

Accepted Answer

A) Detection of small amounts of the virus 
B) Reduction of costs involved in testing 
C) Quicker and easier to perform than other methods 
D) All of the above

Question 2

Hepatitis A virus transmission in blood is unusual because:

Accepted Answer

A) hepatitis A virus is usually transmitted by the enteric route. 
B) hepatitis A virus is usually an acute hepatitis. 
C) infectivity after a hepatitis A virus infection is usually only 2 weeks. 
D) all of the above.

Question 3

Persons who have had injections of human growth hormone are indefinitely deferred as blood donors.This is because of possible transmission of:

Accepted Answer

A) Trypanosomiasis cruzi. 
B) Babesia microti. 
C) Borrelia burgdorferi. 
D) Creutzfeldt-Jakob disease.

Question 4

A positive serological test for syphilis indicates:

Accepted Answer

A) that antibodies to Treponema pallidum are present. 
B) past or present venereal disease infection. 
C) the possibility of an infection with Treponema pallidum. 
D) that antigens associated with venereal disease are present.

Question 5

Human T-cell lymphotropic virus-I has which of the following characteristics?

Accepted Answer

A) It can be transmitted in blood products. 
B) It is found in patients with tropical spastic paraparesis. 
C) It is found in patients with adult T-cell leukemia. 
D) All of the above.

Exam 13: Testing of Donor Blood

What is the advantage of testing donor blood using nucleic acid test methods?

Hepatitis A virus transmission in blood is unusual because:

Persons who have had injections of human growth hormone are indefinitely deferred as blood donors.This is because of possible transmission of:

A positive serological test for syphilis indicates:

Human T-cell lymphotropic virus-I has which of the following characteristics?