IVAC Announces Sample Submission Deadlines for 2021 Holiday Season

November 15, 2021

Snow covered pine treesSeveral service areas in the Unit for Laboratory Animal Medicine (ULAM), including the In-Vivo Animal Core (IVAC), will be closed or operating at limited capacity during the upcoming holiday season.

Please review the following sample submission deadlines carefully to ensure that your research needs are met quickly and efficiently.

IVAC will be closed:

  • Wednesday, November 24 at 12:00 PM (noon) – Friday, November 26 for the Thanksgiving holiday. IVAC locations will re-open on Monday, November 29 at 8:00 AM (NCRC) and 9:00 AM (ARF).
  • Thursday, December 23 at 12:00 PM (noon) – Friday, December 31 for U-M Season Days. IVAC locations will re-open on Monday, January 3 at 8:00 AM (NCRC) and 9:00 AM (ARF).

Sample Submission Deadlines:

The last days for sample submissions needing results (CBC) or partial results (paraffin histology processing/embedding)* BEFORE the holidays will be:

  • Monday, November 22 at 3:00 PM (ARF) and 4:00 PM (NCRC) for the Thanksgiving holiday*
  • Monday, December 20 at 3:00 PM (ARF) and 4:00 PM (NCRC) for U-M Season Days*

*These deadlines were chosen to allow IVAC staff sufficient time before the holiday break(s) to process samples to a stable stage. CBCs must be completed within 24 hours of receipt, and paraffin histology samples are stable once they reach the embedding stage.

Samples that do not need processing prior to the holidays (frozen serum, glass slides, paraffin blocks) can be submitted by appointment up until the closing date; no work will be done during the time periods that IVAC is closed.
As a reminder, sample submission is by appointment only. Study teams are strongly encouraged to book their appointments early, particularly if they anticipate a large submission, in order to help IVAC staff plan their workflows accordingly.


Questions about IVAC services should be sent to ulam-ivac@umich.edu.