| Business | Phone |
| Laboratory Corp Of America 20055 Lake Chabot Rd # 210, Castro Valley 94546 | (510) 690-9165 |
| Quest Diagnostics Inc 19998 Lake Chabot Rd, Castro Valley 94546 | (510) 881-1570 |
| Unilab Corp 20428 Lake Chabot Rd # 10, Castro Valley 94546 | (510) 538-6921 |