| IGE-OAK* | Oak, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGE-OATS* | Oat, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | OBP | Obstetric Panel Aspen Valley Hospital/Mayo Medical Laboratories | 
      
        | OCC-MULT | Occult Blood, ColoCARE®, Feces Aspen Valley Hospital | 
      
        | OCC-G | Occult Blood, Gastric Fluid Aspen Valley Hospital | 
      
        | OCC | Occult Blood, Single, Feces Aspen Valley Hospital | 
      
        | OCT2 | OCT-2 Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | OCT4 | OCT3/4 Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | OLIG2 | OLIG2 Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester | 
      
        | OLIGS | Oligoclonal Banding, Serum Mayo Clinic Laboratories in Rochester | 
      
        | OLIG* | Oligoclonal Banding, Serum and Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | OLIGC | Oligoclonal Banding, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | OLIGU | Oligosaccharide Screen, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | IGE-OLIVETREE* | Olive Tree, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | IGE-ONION* | Onion, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | OPTMX | Opiate Confirmation, Chain of Custody, Meconium Mayo Clinic Laboratories in Rochester | 
      
        | OPATM | Opiate Confirmation, Meconium Mayo Clinic Laboratories in Rochester | 
      
        | OPATX | Opiates Confirmation, Chain of Custody, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | OPI-CONF* | Opiates Confirmation, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | IGE-ORANGE* | Orange, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | ORXNA | Orexin-A/Hypocretin-1, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | ORGA-UR* | Organic Acids Screen, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | OAUS | Organic Acids Screen, Urine Spot Mayo Clinic Laboratories in Rochester | 
      
        | ORGID* | Organism Referred for Identification, Aerobic Bacteria Mayo Clinic Laboratories in Rochester | 
      
        | ORGID-ANAER* | Organism Referred for Identification, Anaerobic Bacteria Mayo Clinic Laboratories in Rochester |