| U014 | Occult Blood (iFOBT/FIT), Stool 糞便隱血 |
| U014A | Occult Blood (iFOBT/FIT), Stool (2nd spec) 糞便隱血(標本二) |
| Y674 | Oligoclonal Bands (IgG), CSF |
| RH05 | Oligomenorrhea/Polycystic Ovary Syndrome 月經稀少/多囊性卵巢症候群組合 |
| RH06 | Oligomenorrhea/Premature Ovarian Failure 月經稀少/卵巢早衰組合 |
| UK154 | Omega 3 / Omega 6 (OMG3) |
| Y91001 | Omega-3 and -6 Fatty Acids |
| Y92701 | OmegaCheck |
| D011 | Opiates (by FIA) 鴉片 |
| Y35819 | Organic Acids, Comprehensive, Quantitative, Urine |
| Y35820 | Organic Acids, Limited, Quantitative, Urine |
| Y38684 | Orotic Acid, Urine with Creatinine |
| Y16322 | Osteocalcin, N-Mid |
| UK159 | Osteogenesis Imperfecta NGS Panel-full sequencing |
| UK052 | Ovarian Autoantibodies (OVAB) |
| Y92769 | Ox LDL |
| Y5390 | Oxalate, Serum/Plasma |
| Y11318 | Oxalic Acid, 24 hr Urine w/o Creatinine 草酸鹽, 24小時尿液 |
| Y10456 | Oxalic Acid, Adult, Urine with Creatinine 草酸鹽, 隨機尿液 |
| Y36637 | Oxcarbazepine Metabolite |