| SIC Codes: | 2835 |
| NAICS Codes: | 325413 |
Companies in this industry develop and manufacture biological, chemical, and radioactive substances used in the process of detecting, diagnosing, and monitoring health conditions. Substances manufactured by this industry are utilized either in vitro (in glass containers such as test tubes) or in vivo (in the body) and are used to diagnose and detect illnesses and medical conditions including allergies, cancer, cholesterol levels, fertility problems, pregnancy, and thyroid disorders. Companies that produce DNA and abused-drugs tests are also included in this industry.