| Order Code | Test Name | CPT | Performing Location | |
|---|---|---|---|---|
| 834277 | Oxalate, Serum or Plasma | 83945 | Accredited Laboratory Partner | |
| 140045 | Ovarian Malignancy Risk | 81500 | Accredited Laboratory Partner | |
| 010249 | Osteocalcin | 83937 | Accredited Laboratory Partner | |
| 007010 | Orotic Acid, Urine | 83921, 82570 | Accredited Laboratory Partner | |
| 16283 | Cortisol AM | 82533 | Accredited NRL Laboratory | |
| 11545 | Cortisol AM Saliva | 82533 | Accredited NRL Laboratory | |
| 9924080 | Organism ID by MALDITOF | 87077 | Accredited NRL Laboratory | |
| 827695 | Organic Acids, Quantitative, Urine | 83918 | Accredited Laboratory Partner | |
| 716720 | Organic Acid Analysis, Urine | 83919 | Accredited Laboratory Partner | |
| 16285 | Cortisol PM | 82533 | Accredited NRL Laboratory | |
| 11546 | Cortisol PM Saliva | 82533 | Accredited NRL Laboratory | |
| 807474 | Orfadin Level | 80299 | Accredited Laboratory Partner | |
| 737846 | Opiates Confirmation, Urine (LabCorp MedWatch®) | 80361 | Accredited Laboratory Partner | |
| 712570 | Opiates Confirmation (GC/MS) | 80361 | Accredited Laboratory Partner | |
| 9913085 | Ophthalmic Panel Qualitative PCR | 87496, 87798, 87529x2 | Accredited NRL Laboratory | |
| 831177 | OmniSeq INSIGHTSM | 81459 | Accredited Laboratory Partner | |
| 100003 TDL ALLE f416 | Omega-5 Gliadin Wheat | No CPT | Accredited Laboratory Partner | |
| 019216 | Oligoclonal Banding, Serum and Cerebrospinal Fluid | 83916 | Accredited Laboratory Partner | |
| 811513 | Olanzapine | 80299 | Accredited Laboratory Partner | |
| 13175 | C-peptide | 84681 | Accredited NRL Laboratory |