| Business | Phone |
| Woodbine Laboratories Inc 10937 Reed Hartman Hwy # C, Cincinnati 45242 | (513) 891-1754 |
| Custom Analytical Svc 11405 Century Cir W, Cincinnati 45246 | (513) 671-5030 |
| Gel Laboratories Of Ohio 6954 Cornell Rd, Cincinnati 45242 | (513) 489-2001 |
| Its Caleb Brett 4760 River Rd, Cincinnati 45233 | (513) 941-8888 |
| Oki Analytical 3939 Montgomery Rd, Cincinnati 45212 | (513) 531-9014 |
| Q Laboratories 1400 Harrison Ave, Cincinnati 45214 | (513) 471-1300 |
| Quantus Analytical 1776 Mentor Ave, Cincinnati 45212 | (513) 731-6111 |