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Areas of Research

NTP has a broad mandate to provide toxicological characterizations for chemicals and agents of public health concern and strives to balance the selection of substances for study. This has resulted in a diverse research program with emphasis on synthetic industrial chemicals, pesticides, drugs, metals, and food additives. NTP continues to explore new areas of research. In general, these initiatives are wide-ranging and include various health-related endpoints.

Current Areas

Botanical dietary supplements pills in a glass bowl

Botanical Dietary Supplements

Botanical dietary supplements are made from plants or plant parts and are taken orally to supplement a diet. Browse studies conducted by NTP on botanical dietary supplements. Go
Cell phone

Cell Phones

Cell phones play an ever-increasing role in modern life. Read more on NTP studies to clarify potential health hazards. Go
Various sizes of metal food container cans


CLARITY-BPA is studying a range of potential health effects from exposure to bisphenol A. The program unites standard regulatory research practices with innovative university studies. Go
Tractor going across crops

Glyphosate & Glyphosate Formulations

Glyphosate and glyphosate formulations are widely used as herbicides. Learn about NTP studies to evaluate these formulations. Go
A person dispensing pills from bottle into their hand

Medicines & Therapeutics

Medicines and therapeutics are available via prescription or over-the-counter to treat illnesses. Learn about NTP studies to identify potential harm from exposure. Go
Scattering of mold spore clusters


Mold has demonstrable human health effects. Browse NTP research and results on mold studies. Go
Graphene buckyballs


Nanotechnology involves science conducted at the nanoscale, which is 1 to 100 nanometers. Discover more about NTP's research into nanoscale materials and nanotechnology. Go
A worker standing in a cloud of fumes from a motorized machine

Polycyclic Aromatic Compounds

PACs are found naturally in petroleum and coal. Learn about NTP's research into potential toxicity of individual PACs and PAC mixtures. Go
Smoke stacks of petroleum factory


Sulfolane is a solvent widely used in industry. Find more information regarding NTP’s series of studies on sulfolane. Go
soccer player on artificial turf

Synthetic Turf/Recycled Tire Crumb Rubber

Synthetic turf and recycled tire crumb rubber are made up of artificial fibers. View NTP study information on synthetic turf and recycled tire crumb rubber. Go

Completed Areas

Worker in safety gear handling diacetyl

Artificial Butter Flavorings (ABF) Components

Artificial butter flavorings have the potential to be hazardous to human health. Learn about NTP research on this topic. Go
Brown water pouring from large metal pipes into a water reservoir with the text Cr6 plus on the bottom left of the photo

Hexavalent Chromium

Hexavalent chromium is found in drinking water sources—a potential risk to public health. Learn more on NTP’s evaluation. Go
West Virginia researcher collecting water sample from the Elk river

West Virginia Chemical Spill

NTP has completed the West Virginia chemical spill research program. NTP's final update, collective findings, and supporting files are now available. Go