Suramya Waidyanatha, Ph.D. | National Institute of Environmental Health Sciences Skip Navigation Suramya Waidyanatha, Ph.D. Close the left navigation Add Much of the work carried out by DTT is in support of the National Toxicology Program (NTP), an interagency partnership of the Food and Drug Administration, National Institute for Occupational Safety and Health, and NIEHS. Visit the NTP Website Office of Program Operations Suramya Waidyanatha, Ph.D. Chemist, Chemistry and Absorption, Distribution, Metabolism and Excretion Resources Group Leader Tel 984-287-3203 [email protected] Suramya Waidyanatha, Ph.D., is a supervisory biochemist and leads the chemistry and ADME (absorption, distribution, metabolism and excretion) Resources Group (CARG) in the Division of Translational Toxicology (DTT). She designs the research needs in analytical chemistry, ADME and toxicokinetics and facilitates the use of corresponding data in the design, conduct, interpretation, and reporting of toxicology research data in peer reviewed manuscripts and government reports. Waidyanatha also administers and monitors contracts conducting ADME studies, toxicokinetics studies, and analytical chemistry activities in support of toxicology research at DTT. Waidyanatha received her B.S. (Honors) in Chemistry from University of Colombo, Sri Lanka and her M.S in Biochemistry from University of Illinois, Chicago. She received her Ph.D. in Analytical Chemistry from University of Maine prior to joining the School of Public Health at the University of North Carolina at Chapel Hill as a Postdoctoral Fellow. She continued her career at the University of North Carolina as a Laboratory Director and a Senior Scientist where she investigated biomarkers of exposure and effect to xenobiotics. Waidyanatha joined DTT in 2008 as a chemist. She is listed as an author in over 100 peer-reviewed manuscripts and government reports. Recent Publications Auerbach S, Cora M, Liu Y, Luh J, Prince L, Roberts G, Shipkowski K, Waidyanatha S. NIEHS Report on the In Vivo Repeat Dose Biological Potency Studies of 1,4-Dichlorobenzene (CASRN 106-46-7) in Female Sprague Dawley (Hsd:Sprague Dawley® SD®) Rats and B6D2F1/Crl Mice (Whole-body Inhalation Studies): NIEHS Report 13 NIEHS Report Series 2026 Apr [Epub ahead of print]. Abstract Auerbach S, Cora M, Liu Y, Luh J, Prince L, Roberts G, Shipkowski K, Waidyanatha S. NIEHS Report on the In Vivo Repeat Dose Biological Potency Studies of 1,4-Dichlorobenzene (CASRN 106-46-7) in Female Sprague Dawley (Hsd:Sprague Dawley® SD®) Rats and B6D2F1/Crl Mice (Whole-body Inhalation Studies): NIEHS Report 13 NIEHS Report Series. 2026 Apr Auerbach S, Cora M, Liu Y, Luh J, Prince L, Roberts G, Shipkowski K, Waidyanatha S. NIEHS Report on the In Vivo Repeat Dose Biological Potency Studies of 1,2-Dichlorobenzene (CASRN 95-50-1) in Female Sprague Dawley (Hsd:Sprague Dawley® SD®) Rats and B6D2F1/Crl Mice (Whole-body Inhalation Studies): NIEHS Report 12 NIEHS Report Series 2026 Apr [Epub ahead of print]. Abstract Auerbach S, Cora M, Liu Y, Luh J, Prince L, Roberts G, Shipkowski K, Waidyanatha S. NIEHS Report on the In Vivo Repeat Dose Biological Potency Studies of 1,2-Dichlorobenzene (CASRN 95-50-1) in Female Sprague Dawley (Hsd:Sprague Dawley® SD®) Rats and B6D2F1/Crl Mice (Whole-body Inhalation Studies): NIEHS Report 12 NIEHS Report Series. 2026 Apr Eccles K, Gaston K, Green E, Waidyanatha S, Stiffler B, Harris S, Rider C, Medlock Kakaley E. Challenging Additivity: Comparing Predicted and Observed AhR Activity of Polycyclic Aromatic Compound (PAC) Mixtures Containing Active and Inactive Constituents. Environmental science & technology 2026 Feb 03;60(4):2976-2987. Abstract Eccles K, Gaston K, Green E, Waidyanatha S, Stiffler B, Harris S, Rider C, Medlock Kakaley E. Challenging Additivity: Comparing Predicted and Observed AhR Activity of Polycyclic Aromatic Compound (PAC) Mixtures Containing Active and Inactive Constituents. Environmental science & technology. 2026 Feb 03 Mitchell C, Roe A, Auerbach S, Bascoul C, Embry M, Ferguson S, Gafner S, Gossmann M, Gurley B, Johnson H, Kelber O, Krzykwa J, Larson J, Liu Y, Mahony C, Monteiro da Rocha A, Pfuhler S, Sica V, Waidyanatha S, Westerink R, Witt K, Oketch-Rabah H, Rider C. From Vision to Reality: Five Years of the Botanical Safety Consortium. Pharmaceutical biology 2025 Dec;63(1):800-818. Abstract Mitchell C, Roe A, Auerbach S, Bascoul C, Embry M, Ferguson S, Gafner S, Gossmann M, Gurley B, Johnson H, Kelber O, Krzykwa J, Larson J, Liu Y, Mahony C, Monteiro da Rocha A, Pfuhler S, Sica V, Waidyanatha S, Westerink R, Witt K, Oketch-Rabah H, Rider C. From Vision to Reality: Five Years of the Botanical Safety Consortium. Pharmaceutical biology. 2025 Dec Sloop J, Pierfelice J, Mutlu E, Gleason S, Green K, Waidyanatha S. Development and Validation of an Analytical Method for Simultaneous Quantitation of Individual Xylene Isomers in Blood via Headspace Gas Chromatography-Mass Spectrometry. Microchemical journal : devoted to the application of microtechniques in all branches of science 2025 May;212:. Abstract Sloop J, Pierfelice J, Mutlu E, Gleason S, Green K, Waidyanatha S. Development and Validation of an Analytical Method for Simultaneous Quantitation of Individual Xylene Isomers in Blood via Headspace Gas Chromatography-Mass Spectrometry. Microchemical journal : devoted to the application of microtechniques in all branches of science. 2025 May NTP Reports National Toxicology Program. Toxicology and carcinogenesis study of triclosan administered dermally to B6C3F1/N mice. National Toxicology Program technical report series 2024 May [Epub ahead of print]. Abstract National Toxicology Program. Toxicology and carcinogenesis study of triclosan administered dermally to B6C3F1/N mice. National Toxicology Program technical report series. 2024 May National Toxicology Program. Toxicology and carcinogenesis studies of black cohosh root extract (CASRN 84776-26-1) administered by gavage to Sprague Dawley (Hsd:Sprague Dawley SD) rats and female B6C3F1/N mice. National Toxicology Program technical report series 2023 Dec [Epub ahead of print]. Abstract National Toxicology Program. Toxicology and carcinogenesis studies of black cohosh root extract (CASRN 84776-26-1) administered by gavage to Sprague Dawley (Hsd:Sprague Dawley SD) rats and female B6C3F1/N mice. National Toxicology Program technical report series. 2023 Dec National Toxicology Program. Toxicology and carcinogenesis studies of an isomeric mixture of tris(chloropropyl) phosphate administered in feed to Sprague Dawley (Hsd:Sprague Dawley SD) rats and B6C3F1/N mice. National Toxicology Program technical report series 2023 Jun [Epub ahead of print]. Abstract National Toxicology Program. Toxicology and carcinogenesis studies of an isomeric mixture of tris(chloropropyl) phosphate administered in feed to Sprague Dawley (Hsd:Sprague Dawley SD) rats and B6C3F1/N mice. National Toxicology Program technical report series. 2023 Jun National Toxicology Program. Toxicity studies of acetoin and 2,3-pentanedione administered by inhalation to Wistar Han [Crl:WI(Han)] rats and B6C3F1/N mice. Toxicity report series 2023 Mar [Epub ahead of print]. Abstract National Toxicology Program. Toxicity studies of acetoin and 2,3-pentanedione administered by inhalation to Wistar Han [Crl:WI(Han)] rats and B6C3F1/N mice. Toxicity report series. 2023 Mar National Toxicology Program. Toxicity studies of sodium metavanadate and vanadyl sulfate administered in drinking water to Sprague Dawley (Hsd:Sprague Dawley SD) rats and B6C3F1/N mice. Toxicity report series 2023 Feb [Epub ahead of print]. Abstract National Toxicology Program. Toxicity studies of sodium metavanadate and vanadyl sulfate administered in drinking water to Sprague Dawley (Hsd:Sprague Dawley SD) rats and B6C3F1/N mice. Toxicity report series. 2023 Feb More Recent Publications from PubMed Back to Top Last Reviewed: December 12, 2025