| Business | Phone |
| Alpha Laboratories Inc 95 Hamilton St N #2, Burlington | (905) 690-3436 |
| Gamma Dynacare Laboratories 761 Brant St #101, Burlington L7R 2H7 | (905) 632-9009 |
| Canadian Medical Laboratories 2200 Fairview St #105, Burlington L7R 4H9 | (905) 333-5990 |
| Gamma-Dynacare Medical Labs 5014 New St, Burlington L7L 1V1 | (905) 634-8306 |
| Etts Holter Scanning Svc 3155 Harvester Rd #210, Burlington L7N 3V2 | (905) 333-1399 |