| 
           
         | 
        
          Occult Blood, Gastric Memorial-Belleville & Memorial-Shiloh
         | 
      
      
        | 
          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
         | 
      
      
        | 
          OPATM 
         | 
        
          Opiate Confirmation, Meconium Mayo Clinic Laboratories in Rochester
         | 
      
      
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         | 
        
          Opiate, Urine Memorial-Belleville & Memorial-Shiloh
         | 
      
      
        | 
           
         | 
        
          Opiates, Conf, Urine Barnes-Jewish Hospital Laboratory
         | 
      
      
        | 
          OAUS 
         | 
        
          Organic Acids Screen, Urine Spot Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
          OTP 
         | 
        
          Orthopedia Homeobox Protein (OTP) Immunostain, Technical Component Only Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
           
         | 
        
          Orthopox Virus (Monkeypox) PCR Quest Diagnostics
         | 
      
      
        | 
          ORTHP 
         | 
        
          Orthostatic Proteinuria, Random, Urine Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
          OSM24 
         | 
        
          Osmolality, 24 Hour, Urine Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
           
         | 
        
          Osmolality, Serum Memorial-Belleville
         | 
      
      
        | 
           
         | 
        
          Osmolality, Urine Memorial-Belleville
         | 
      
      
        | 
           
         | 
        
          Osteocalcin, Serum Barnes-Jewish Hospital Laboratory
         | 
      
      
        | 
          OIBFG 
         | 
        
          Osteogenesis Imperfecta and Bone Fragility Gene Panel, Varies Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
           
         | 
        
          Ova and Parasite Examination Barnes-Jewish Hospital Laboratory
         | 
      
      
        | 
          OPE 
         | 
        
          Ova and Parasite, Travel History or Immunocompromised, Feces Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
          OXAZS 
         | 
        
          Oxazepam, Serum Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
          OMHC 
         | 
        
          Oxcarbazepine Metabolite, Serum Mayo Clinic Laboratories in Rochester
         | 
      
      
        | 
           
         | 
        
          Oxycodone, Conf, Urine Barnes-Jewish Hospital Laboratory
         | 
      
      
        | 
           
         | 
        
          Oxycodone, Urine Memorial-Belleville & Memorial-Shiloh
         |