O

O & P Panel with Trichrome Stain, Stool

Occult Blood, by Fecal Hemoglobin Immunoassay, Diagnostic (Quidel iFOB or FIT), Random Stool

Occult Blood, by Fecal Hemoglobin Immunoassay, Screening (Quidel iFOB or FIT), Random Stool

Occult Blood, Fecal Guaiac Screen
Gastroccult (includes Gastric pH), Gastric Aspirate or Vomitus

Octreotide Drug Level, Plasma

Ocular Pathology Biopsy

17OH Progesterone Quant HPLC, Serum

17-OH-Pregnenolone, Serum

Olanzapine, Serum

Oligoclonal Bands
Multiple Sclerosis Screen Panel, Serum & CSF

Oligosaccharides, Urine

Opiate, Confirmation, Random Urine

Opiates, Urine Screen
See also: Drugs of Abuse, Urine
Drugs of Abuse Urine Screen with Reflex Confirmation, Urine + Confirm

Opiates Confirmation, Plasma

Opportunistic Pulmonary Infection
Bronchioalveolar Lavage (BAL) for Cancer Evaluation, Bronchioalveolar Lavage
Spontaneous Sputum for Cancer Evaluation, Sputum

Orfadin Level, Whole Blood

Organ-Tissue Donor Recipient Panel, Whole Blood, Serum and Urine

Organic Acids, Random Urine

Ornithine
Amino Acids, Quantitative, Plasma
Amino Acids, Quantitative, Random Urine

Orotic Acid, Random Urine

Orthopox and non-variola orthopox (monkeypox) DNA, PCR dry swab and confirmation

Osmolality, Plasma
See also: Osmolality-Other, Body Fluid

Osmolality, Urine

Osmolality Gap
Ethanol/Volatiles Screen (EVS), Plasma
Osmolality, Plasma

Osmolality-Other, Body Fluid
See also: Osmolality, Plasma

Osmotic Fragility, Erythrocyte, Whole Blood

Osteocalcin by ECIA, Serum

OtoSCOPE Familial Variant Testing, Whole Blood, Saliva, or Buccal Swabs

OtoSCOPE Panel, Whole Blood, Saliva, or Buccal Swabs

Oxalate, Acidified Plasma

Oxalate, Urine

Oxcarbazepine or Eslicarbazepine Metabolite (MHD), Serum

Oxycodone
Opiate, Confirmation, Random Urine

Oxycodone, Urine Screen, Random
See also: Drugs of Abuse, Urine
Drugs of Abuse Urine Screen with Reflex Confirmation, Urine + Confirm

Oxygen
Blood Gases (Arterial), Whole Blood (syringe only)
Blood Gases (Capillary Stick), Whole Blood

Oxygen Saturation (Arterial), Whole Blood (syringe only)

Oxygen Saturation (Venous), ECMO, Whole Blood (syringe only)

Oxyhemoglobin
Oxygen Saturation (Arterial), Whole Blood (syringe only)