Tests

• O blood type
• Obstetric sonogram
• Obstetric ultrasonography
• Obstructive sleep apnea - sleep study
• Ocular motility examination
• Ocular ultrasonography
• OGTT - non-pregnant
• OGTT - pregnancy
• Oligohydramnios - ultrasound
• Open lung biopsy
• Open lymph node biopsy
• Open pleural biopsy
• Ophthalmoscopy
• Oral glucose tolerance test
• Oral glucose tolerance test - non-pregnant
• Oral glucose tolerance test - pregnancy
• Oral glucose tolerance test - pregnancy (OGTT)
• Oral glucose tolerance test - non-pregnant
• Orbit CT scan
• Orbital ultrasonography
• Oropharynx lesion biopsy
• OSA - sleep study
• Osmolality - blood test
• Osmolality urine test
• Osmotic fragility test
• Osteoporosis - calcium level
• Osteoporosis-BMD
• Otitis media - tympanometry
• Otoscopy
• Ovarian - transvaginal ultrasound
• Overactive thyroid - TBG
• Oxyuriasis test