| Business | Phone |
| Anachem Laboratories 1724 W 58th St, Los Angeles 90062 | (310) 322-4993 |
| Daniel & Son Assayers Inc 640 S Hill St # 558, Los Angeles 90014 | (213) 624-5678 |
| L A Prompt Clinical Inc 6221 Wilshire Blvd # 207, Los Angeles 90048 | (323) 935-5800 |
| Larchmont Diagnostic Labs Inc 321 N Larchmont Blvd, Los Angeles 90004 | (323) 461-9100 |
| National Technical Systems Inc 5320 W 104th St, Los Angeles 90045 | (310) 348-0900 |
| Universal Laboratories 4221 Wilshire Blvd, Los Angeles 90010 | (323) 459-0785 |
| Forensic Science Lab 1650 N Kenmore Ave, Los Angeles 90027 | (323) 660-3300 |
| Metic Immuno Genetic Consultant 1640 Marengo St, Los Angeles 90033 | (323) 221-2177 |
| Metic Transplantation Labs Inc 1640 Marengo St, Los Angeles 90033 | (323) 221-2106 |