| AZ Tempe | Celerion | NE Lincoln | Celerion |
| CA Cypress | Altasciences LA | NJ Eatontown | Clinilabs |
| CA Glendale | Parexel Early Phase Unit | NJ Fair Lawn | TKL Research |
| CT New Haven | Pfizer | NJ Secaucus | Frontage |
| FL Daytona Beach | Fortrea | NJ Neptune | Inflamax Research |
| FL Jacksonville | Quotient Sciences | NJ Newark | Inflamax Research |
| FL Miami | Syneos Health | NJ Newark | Biotrial |
| FL Miami | Quotient Sciences | NV Las Vegas | Novum |
| FL Orlando | OCRC | NV Las Vegas | PPD |
| IL Graysake | AbbVie | NY NY City | Clinilabs |
| KS Lenexa | Analab | OH Cincinnati | CTI Clinical Research |
| KS Lenexa | JCCT | OH Cincinnati | Medpace |
| KS Lenexa | ICON Early Phase Service | OH Cincinnati | New Horizons Clinical Research |
| KS Overland Park | IQVIA (QuintilesIMS) | OH Columbus | Ohio Clinical Trials |
| KS Overland Park | Vince & Associates | TN Knoxville | NOCCR |
| MD Baltimore | Parexel | TX Austin | PPD |
| MD Baltimore | Pharmaron | TX Dallas | Fortrea |
| MD Baltimore | CVD | TX San Antonio | ICON |
| MD Baltimore | Walter Reed Army Institute of Research | UT Salt Lake City | ICON |
| MN St Paul | Prism Research | WI Madison | Fortrea |
| MO St. Louis | BioPharma Services | WI West Bend | Spaulding Clinical |
| MO Springfield | QPS Bio Kinetic | WV Morgantown | WVUCPRC |
| MO St Charles | Pharma Medica Research | | |
| NC High Point | Clinical Trials Center | | |
| ND Fargo | Axis Clinicals | | |
| ND Fargo | Novum | | |