Skip to Main Navigation
Skip to Page Content

Download NTP Study Data

NTP seeks to engage researchers and members of the public who may be interested in accessing study data. For those interested in a detailed look at studies, retrieving current study data is as simple as the download of a few files.

Summary data on all NTP chemicals can be downloaded in a single file. If you would like more detailed data, you can download an individual study type. The following study types are available for detailed data downloads:

  • Bioassay
  • CHO cell cytogenesis
  • Drosophila
  • Micronucleus
  • Mouse lymphoma
  • Rodent cytogenetics
  • Salmonella

NTP will update the data on a quarterly basis.

Format of NTP Data Downloads

NTP uses XML to create these data files. XML is a free, open standard computer language with a set of rules that encodes documents in machine readable format. The XML files contain the data; schema files show how that data is organized and formatted. For additional information, see the World Wide Web Consortium's XML Technology section.

Although you can open and read XML and schema files in a text editor, it is unwieldy to view the downloaded files this way. Most files will be too large to open in Excel. Typically, bioinformaticians or computer programmers would use these files to bring NTP data into your applications or databases.

NTP Test Article and Study Data

Formatting common to all XML files is described in the Custom Type Schema (22 KB - Sept. 6, 2013).

List of available NTP test article and study data
Data Type Sample Data All Data Schema Date Updated
Test Articles Sample Data 2 KB All Data 470 KB (3.99 MB) Schema 9 KB May 21, 2018
Bioassay (CarTox) Sample Data 727 KB All Data 90.2 MB (1.51 GB) Schema 25 KB Mar 31, 2016
CHO Cell Cytogenetics Sample Data 39 KB All Data 1 MB (29 MB) Schema 16 KB Jul 09, 2010
Drosophila Sample Data 3 KB All Data 79 KB (1.8 MB) Schema 12 KB Apr 16, 2012
Micronucleus Sample Data 23 KB All Data 1 MB (23.4 MB) Schema 15 KB Mar 31, 2016
Mouse Lymphoma Sample Data 25 KB All Data 623 KB (14.8 MB) Schema 9 KB Mar 02, 2012
Rodent Cytogenetics Sample Data 125 KB All Data 450 KB (13.2 MB) Schema 17 KB May 31, 2012
Salmonella Sample Data 192 KB All Data 8.17 MB (150 MB) Schema 11 KB Mar 31, 2016
Notice: NTP makes no representations and extends no warranties of any kind, either expressed or implied. There are no express or implied warranties of merchantability or fitness for a particular purpose.

For questions or additional information, contact:

Central Data Management
P.O. Box 12233, MD K2-05
Research Triangle Park, NC 27709
Telephone: 984-287-3211
Email us or use our contact form