Rodent Ordering System (ROS)


Important – please read NOTICES before proceeding.

ORDER DEADLINE: Tuesday, noon eastern time for following week delivery.


Orders for mid December/early January delivery should be placed early in December. The BRB Order Desk is closed from Christmas Eve through New Year's Day. No deliveries will be scheduled the weeks of Christmas and New Year's Day.

Temporary change in eligibility limit for non-NIA funded grants Due to the extreme demands on the NIA rodent colonies, the eligibility limit for non-NIA funded grants has been reduced to 10 animals every other month, effective September 1, 2016. Please see the Notice on the rodent handbook homepage

To begin the ordering process, click on the desired resource to be ordered.

The National Institute on Aging (NIA), part of the National Institutes of Health (NIH), maintains colonies of barrier-raised rodents under contractual arrangement with commercial vendors. All colonies are barrier maintained and Specific Pathogen-Free (SPF). Animals from the NIA aged rodent colonies are available to investigators at academic and non-profit research institutions. The NIA aged rodent colonies are a limited resource developed for use in aging research. They are not available for use as a general source of adult animals for unrelated areas of research.


The NIA has long provided biological resources to the research community to facilitate research on the biology of aging, for which users paid a cost-sharing fee and shipping costs. As of January 1, 2014, the NIA can no longer charge users for the biological resources, nor any related shipping fees. The NIA is committed to continuing to provide these unique resources to the research community. However, this change, and the resulting increase in cost to the NIA to provide the biological resources, necessitates a reduction in the scope of the resources and more stringent limitations on the availability of the resources. See NIA’s new eligibility criteria and restrictions on number of animals per month per grant . While there is a mechanism to apply for an exception to the resource limit, only a very limited number of these requests will be granted, and will be based on scientific need and availability. NIA asks that the research community continue to exercise care and restraint when requesting animals from the NIA aged rodent colonies because even a small increase in the number of animals per order will quickly decimate the animal colonies. For questions about the NIA aged rodent colonies that are not addressed in the rodent handbook, email

F344BN Females: Our colony does not have any available female F344BN at this time. We are increasing their entry levels to rebuild the colony and foresee being able to re-open distribution of the older animals no earlier than Fall 2019.