CTBS Storage and Distribution 3

Question 1

When shipping fresh (non-frozen) cardiovascular tissue, the storage medium temperature must be maintained at:

Accepted Answer

4°C ± 2°C

Answer

Fresh cardiovascular tissue is stored and shipped at refrigerated temperatures of 4°C ± 2°C to maintain viability while inhibiting microbial growth.

Question 2

A tissue bank's distribution SOP requires two-person verification before releasing tissue. If only one person is available, the CORRECT action is to:

Accepted Answer

Hold the release until a second qualified person is available

Answer

SOPs requiring two-person verification are critical controls; deviation requires holding the release until proper verification can occur.

Question 3

The AATB standard requires that skin allografts stored in glycerol be maintained at a temperature of:

Accepted Answer

2–8°C

Answer

Glycerolized skin is stored at refrigerated temperatures of 2–8°C, as glycerol acts as a preservative that does not require freezing.

Question 4

What is the key reason tissue banks assign unique lot or unit numbers to each allograft?

Accepted Answer

To enable traceability from donor to recipient and support recalls

Answer

Unique identifiers are essential for donor-to-recipient traceability and enable targeted, efficient recalls when safety concerns arise.

Question 5

Which of the following storage containers is MOST appropriate for long-term cryogenic preservation of tissue at -196°C?

Accepted Answer

Liquid nitrogen Dewar

Answer

Liquid nitrogen Dewars maintain temperatures at -196°C required for cryogenic storage of certain allografts such as bone marrow and some vascular grafts.

(CTBS) Certified Tissue Bank Specialist Practice Test

(CTBS) Certified Tissue Bank Specialist Practice Test

CTBS Storage and Distribution 3