To support natural resource damage assessment (NRDA) in response to the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico, a large number of samples were collected from protected species including marine mammals and sea turtles. Analysis of these samples will continue for the foreseeable future. To support NRDA sample analyses, NOAA will require analytical laboratories in addition to the commercial laboratories that are currently listed as providing support to NRDA.