# National Institute of Environmental Health Sciences (NIEHS)

> U.S. institute that ran the EMF RAPID research program and publishes the appliance and power-line field measurements used as reference ranges for ELF exposure.

- Canonical URL: https://emfbase.com/organizations/niehs
- Collection: Organizations
- Record id: `organizations:niehs`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/organizations/niehs

## Key values

- **Role:** research
- **Jurisdiction:** US
- **Website:** https://www.niehs.nih.gov/health/topics/agents/emf

## Related records

- [Household background magnetic field (50/60 Hz)](https://emfbase.com/emitters/household-background-magnetic-field): Away from appliances, homes typically sit below a few milligauss; the WHO's epidemiological association with childhood leukaemia begins at a daily average of 3–4 mG (0.3–0.4 µT).
- [NTP rodent carcinogenicity studies of cell phone radiofrequency radiation (2018)](https://emfbase.com/studies/ntp-2018-cellphone-rfr): Two-year whole-body exposure studies found clear evidence of malignant schwannomas of the heart in male rats at exposure levels above the human whole-body limit, with no such finding in female rats or in mice.

## Sources

- `niehs-emf` National Institute of Environmental Health Sciences. *Electric and Magnetic Fields*. https://www.niehs.nih.gov/health/topics/agents/emf — government, link checked 2026-08-12
- `ntp-cellphone` National Toxicology Program, U.S. NIEHS. *Cell Phone Radiofrequency Radiation Studies*. https://ntp.niehs.nih.gov/whatwestudy/topics/cellphones — government, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.