| Business | Phone |
| Wolfgang Assoc Inc 7220 Sw Sylvan Ct, Portland 97225 | (503) 297-4113 |
| Cascade Occupational Med 9370 Sw Greenburg Rd # 602, Portland 97223 | (503) 246-4104 |
| Adc Drug Testing Clinic 1020 Ne 2nd Ave # 310, Portland 97232 | (503) 234-8378 |
| Amc Drug Testing Inc Portland 97204 | (503) 295-2161 |
| Rss Drug & Alcohol Testing 6415 Sw Haines St, Portland 97219 | (503) 892-9717 |
| Clean Fleet 10350 N Vancouver Way, Portland 97217 | (503) 978-1600 |
| Oregon Medical Laboratory 1750 Sw Harbor Way, Portland 97201 | (503) 274-7680 |