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Storage and Distribution Flashcards

7 cards from real CTBS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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

    Answer: 4°C ± 2°C

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

  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:

    Answer: Hold the release until a second qualified person is available

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

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

    Answer: 2–8°C

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

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

    Answer: To enable traceability from donor to recipient and support recalls

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

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

    Answer: Liquid nitrogen Dewar

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

  6. If a hospital returns unused tissue to the tissue bank, what is the FIRST step the bank must take?

    Answer: Quarantine and inspect the tissue per SOP before any reuse

    Returned tissue must be quarantined and evaluated against return acceptance criteria before it can be considered for redistribution.

  7. Under AATB standards, a tissue bank's storage area temperature monitoring system must have alarms that notify staff when:

    Answer: Temperatures exceed normal operating range

    Alarm systems must be set to alert staff when storage temperatures deviate outside the validated operating range to enable timely corrective action.