| Business | Phone |
| Advanced Materials Research 3040 Riverside Dr # 108, Columbus 43221 | (614) 486-8292 |
| Viara Research Inc 4 W Royal Forest Blvd, Columbus 43214 | (614) 267-4600 |
| Arlington Materials Research 2611 Wickliffe Rd, Columbus 43221 | (614) 326-3232 |
| Capital Research Inc 310 Hanford St, Columbus 43206 | (614) 445-7809 |
| Research Associates Intl 1425 E Dublin Granville Rd, Columbus 43229 | (614) 885-1734 |
| Research Services 37 N High St, Columbus 43215 | (614) 225-6923 |
| Community Research Partners 300 E Broad St, Columbus 43215 | (614) 221-8831 |
| Dynamic Research Corp 4010 E 5th Ave, Columbus 43219 | (614) 231-1183 |
| Esearchers.Com 4675 Winterset Dr, Columbus 43220 | (614) 451-1530 |
| Mid-West Cardiology Research 3545 Olentangy River Rd # 301, Columbus 43214 | (614) 263-1011 |