| Business | Phone |
| Richter International Inc 505 King Ave, Columbus 43201 | (614) 424-3430 |
| Roxane Laboratories Inc 700 Manor Park Dr, Columbus 43228 | (614) 463-9151 |
| Eden Labs 1601 W 5th Ave, Columbus 43212 | (614) 374-2455 |
| Moy Labs Inc 1022 Galliton Ct, Columbus 43220 | (614) 442-3338 |
| Labbook.Com 6600 Busch Blvd, Columbus 43229 | (614) 310-1000 |
| Inner City Lab Inc 700 Jasonway Ave, Columbus 43214 | (614) 457-7059 |
| Intercity Lab 1800 Riverside Dr, Columbus 43212 | (614) 486-5587 |
| Intercity Laboratories 1801 Riverside Dr, Columbus 43212 | (614) 486-9416 |