EXPERIMENTAL PATHOLOGY LABORATORIES, INC.

Experimental Pathology Laboratories, Inc. specializes in advanced histopathology and toxicological research services for federal agencies, delivering microscopic analysis of rodent and human tissue samples to assess chemical-induced morphological and pathological changes. Their core capabilities include embedding, sectioning, H&E staining, and comprehensive evaluation of tissues from in vivo exposure studies, with particular expertise in pulmonary, hepatic, and renal systems. They support complex toxicology programs by processing samples from air-liquid interface cell cultures, maternal-fetal exposure models, and environmental contaminant studies—particularly per- and polyfluoroalkyl substances (PFAS). Their technical proficiency spans standardized histological protocols, peer review of pathology findings, and archival management of tissue specimens under controlled conditions, ensuring data integrity for regulatory submissions and scientific publications. The contractor maintains a strong, sustained relationship with the Department of Health and Human Services, primarily supporting the National Toxicology Program and the National Institute of Environmental Health Sciences through pathology peer review, tissue analysis, and repository management. They also deliver critical pathology services to the Environmental Protection Agency, focusing on environmental toxicology assessments linked to chemical exposure and ecological health. Their work for the Department of the Interior involves aquatic toxicology, including fish tumor and deformity studies, demonstrating adaptability across terrestrial, aquatic, and human health domains. Their primary industry focus lies in professional scientific services under NAICS 541990 and biotechnology research under 541714, positioning them as a niche provider of preclinical pathology support for environmental health and toxicology research. They serve the federal life sciences market with precision-driven, regulatory-grade pathology outcomes rather than broad-spectrum research. As a small business structured as a 2L entity based in Sterling, Virginia, Experimental Pathology Laboratories, Inc. operates without federal certifications but maintains a focused, high-compliance operational model aligned with government research standards. Their geographic presence supports direct access to key federal research hubs in the Washington, D.C. metro region.