The FRA intends to award a small-business set-aside purchase order for post-accident toxicological testing of human samples, tox box program management, and related scientific services for its Office of Railroad Safety. Contractors must maintain certification such as DHHS/SAMSHA NLCP accreditation, ABFT/ANAB forensic toxicology accreditation, or CAP accreditation. The work involves analyzing urine, whole blood, and tissue samples from railroad employees to ensure legally defensible and scientifically credible results supporting the Post-Accident Toxicological Testing Program. The total estimated value of the purchase order is $2,600,000.