Skip to main content
U.S. flag

An official website of the United States government

Oldest Ages Available in NIA Aged Rodent Colonies

This page was last updated on: July 1, 2022.

Notice: The NIA has long provided biological resources to the research community to facilitate research on the biology of aging. As of January 1, 2014, the NIA will no longer charge users for the biological resources, nor any related shipping fees due to a new interpretation of the regulations that govern contracting. Notice Regarding Pricing.

The information below is updated monthly, but NIA does not guarantee the information is accurate at all times. The oldest age available is dependent on demand from the research community, which is subject to change. Contact the order desk for more specific information on availability of specific strain/gender/ages. Special instructions such as "No Tumors" or "No Cataracts" may lower the age of the oldest available.

Note: Due to limited availability, we cannot age animals out past the available ages for individual requests.

Aging Colonies
Strain Gender Oldest DOB Available*

F344

M

March 2020

F344

F

November 2020

BN

M

February 2020

BN

F

November 2020

F344BNF1

M

September 2019

F344BNF1

F

November 2020

BALB/c

M

NONE - see notice on front page of handbook

BALB/c

F

May 2020

C57BL/6

M

February 2020

C57BL/6

F

November 2020

CB6F1

M

April 2020

CB6F1

F

February 2020

*Few at older ages, email the order desk for details

nia.nih.gov

An official website of the National Institutes of Health