| Business | Phone |
| Smile Dental Laboratory Gaithersburg 20877 | (301) 990-9826 |
| Charles River Laboratories 9110 Gaither Rd, Gaithersburg 20877 | (240) 632-8390 |
| Denro Laboratories Inc 9318 Gaither Rd, Gaithersburg 20877 | (301) 947-1183 |
| Gpl Laboratories Lllp 202 Perry Pkwy, Gaithersburg 20877 | (301) 840-1209 |
| Gpl Laboratories Lllp 5 N Frederick Ave, Gaithersburg 20877 | (301) 926-6802 |