Oak Live (Quercus virginiana) IgE

Oak Red (Quercus rubra) IgE

Oak, IgE, Serum

Oat IgG

Oat, IgE, Serum

OCT-2 Immunostain, Technical Component Only

OCT3/4 Immunostain, Technical Component Only

Octopus, IgE, Serum

Olanzapine (Zyprexa)

OLIG2 Immunostain, Technical Component Only

Oligoclonal Banding, Serum

Oligoclonal Banding, Serum and Spinal Fluid

Oligoclonal Banding, Spinal Fluid

Oligosaccharide Screen, Random, Urine

Olive Black IgG

Olive Tree, IgE, Serum

Olive-Food, IgE, Serum

OncoHeme Next-Generation Sequencing for Myeloid Neoplasms, Varies

Onion IgG

Onion, IgE, Serum

Opiate Confirmation, Chain of Custody, Meconium

Opiate Confirmation, Meconium

Opiates Confirmation, Chain of Custody, Random, Urine

Opiates Confirmation, Random, Urine

Opiates, Serum or Plasma, Quantitative

Opiates, Umbilical Cord Tissue

Orange IgG

Orange, IgE, Serum

Orchard Grass, IgE, Serum

Oregano IgG

Oregano, IgE, Serum

Orexin-A/Hypocretin-1, Spinal Fluid

Organic Acids Screen, Random, Urine

Organic Acids Screen, Urine Spot

Organism Referred for Identification, Aerobic Bacteria

Organism Referred for Identification, Anaerobic Bacteria

Organophosphate Pesticide Metabolites, Urine

Orotic Acid, Random, Urine

Orris Root (Iris florentina) IgE

Orthopoxvirus Molecular Detection PCR, Swab

Orthostatic Protein, Timed Collection, Urine

Orthostatic Proteinuria, Random, Urine

Osmolality, Feces

Osmolality, Random, Urine

Osmolality, Serum

Osmolality, Urine

Osmotic Fragility, Erythrocytes

Osmotic Gap, Feces

Osteocalcin, Serum

Ova and Parasite Exam, Fecal (Immunocompromised or Travel History)

Ova and Parasite, Microscopy, Varies

Ovalbumin, IgE, Serum

Ovarian Antibody Screen with Reflex to Titer, IFA

Ovomucoid, IgE, Serum

Ox-Eye Daisy, IgE, Serum

OXA-48 and VIM, PCR (Bill Only)

Oxacillin-Hydrolyzing Beta-Lactamase (blaOXA-48-like) and Verona Integron-Encoded Metallo-Beta-Lactamase (blaVIM) DNA Surveillance, PCR, Varies

Oxacillin-Hydrolyzing Beta-Lactamase (blaOXA-48-like) and Verona integron-encoded metallo-beta-lactamase (blaVIM) in Gram-Negative Bacilli, Molecular Detection, PCR, Varies

Oxalate Analysis, Hemodialysate

Oxalate, 24 Hour, Urine

Oxalate, Plasma

Oxalate, Random, Urine

Oxalate, Random, Urine

Oxalate/Creatinine Ratio, Urine

Oxazepam (Serax), Serum

Oxcarbazepine Metabolite, Serum

Oxycodone - Free (Unconjugated), Serum

Oxycodone Screen, Chain of Custody, Random, Urine

Oxycodone Screen, Random, Urine

Oxycodone with Metabolite Confirmation, Chain of Custody, Random, Urine

Oxycodone with Metabolite Confirmation, Random, Urine

Oxymorphone Confirmation, Random, Urine

Oxysterols, Blood

Oxysterols, Blood Spot

Oxysterols, Plasma

Oyster, IgE, Serum