| Business | Phone |
| Calypte Biomedical Corp 5000 Hopyard Rd # 480, Pleasanton 94588 | (925) 730-7200 |
| Muirlab 4125 Mohr Ave # M, Pleasanton 94566 | (925) 931-1201 |
| Unilab Corp 5720 Stoneridge Mall Rd # 110, Pleasanton 94588 | (925) 227-0180 |
| United Westlabs Inc 1475 Cedarwood Ln, Pleasanton 94566 | (925) 401-4000 |
| Valley Care Laboratory 5565 W Las Positas Blvd # 110, Pleasanton 94588 | (925) 734-3345 |
| Zigma Technologies 7483 Stonedale Dr, Pleasanton 94588 | (925) 485-7993 |