1. Abbott Laboratories
2. Bio-Rad Laboratories Inc.
3. Clinical Reference Laboratory Inc.
4. Danaher Corporation
5. Drgerwerk AG & Co. KGaA
6. Express Diagnostics International
7. F. Hoffmann-La Roche Ltd
8. GE Healthcare Inc.
9. Laboratory Corporation of America Holdings
10. Legacy Healthcare Services Inc.
11. Mayo Collaborative Services Inc.
12. Merck KGaA
13. Pfizer Inc.
14. Precision Diagnostic Services Inc
15. Psychemedics Corporation
16. Quest Diagnostics
17. Sanofi SA
18. Siemens Healthineers AG
19. Thermo Fisher Scientific Inc