O
| 17-OH Progesteron** | 71 | 64 | 68 |
| Obezitatea monogenica - panel complex de 41 de gene - PLUS, SEQ, DEL/DUP (KI1701)* | 4600 | 4600 | 5483 |
| Olanzapina si metabolitul - Desmetilolanzapina (OLAN)* | 386 | 347 | 4617 |
| Oligozaharide in urina (OSACU)* | 138 | 124 | 2073 |
| Omeprazol (OMEPR)* | 300 | 270 | 5969 |
| Opiacee in sange* | 260 | 234 | 6146 |
| Opiacee in urina - test de confirmare* | 260 | 234 | 6151 |
| Opiacee in urina* | 110 | 99 | 6150 |
| Opipramol (OPIPR)* | 183 | 165 | 4867 |
| Ornitina (ORNI)* | 193 | 174 | 3558 |
| Orto-cresol in urina (KRESU)* | 195 | 176 | 5656 |
| Osmolalitate serica (OSMOL)* | 43 | 39 | 5742 |
| Osmolalitate urinara (OSMOLU)* | 69 | 62 | 5743 |
| Osteocalcin** | 75 | 68 | 742 |
| Osteogenesis Imperfecta - gena COL1A1 - MLPA* | 2000 | 2000 | 2683 |
| Osteogenesis Imperfecta - gena COL1A2 - MLPA* | 2000 | 2000 | 2685 |
| Osteogenesis Imperfecta - gena CRTAP - secventiere* | 4000 | 4000 | 4692 |
| Osteomalacia hipofosfatemica - test genetic FGF23, MLPA* | 3200 | 3200 | 2921 |
| Osteomalacia hipofosfatemica - test genetic FGF23, secventiere* | 4300 | 4300 | 2920 |
| Oxcarbazepin si metaboliti* | 116 | 104 | 1495 |
| Oxid nitric* | 285 | 257 | 5754 |
| Oxitocina in sange* | 460 | 414 | 5045 |
