| PENL | Penicillium chrysogenum, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | SMCO | PERIPHERAL BLOOD SMEAR United Health Services Laboratories | 
      
        | PNZN | Perphenazine, Serum or Plasma Medtox Laboratories, Inc. | 
      
        | PF4 | PF4 United Health Services Laboratories | 
      
        | PHRR | PH ARTERIAL United Health Services Laboratories | 
      
        | PLPH | PH PLEURAL United Health Services Laboratories | 
      
        | PHRV | PH VENOUS United Health Services Laboratories | 
      
        | PHEN | PHENOBARBITAL (Lourdes) United Health Services Laboratories | 
      
        | PBR | Phenobarbital, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PKU | Phenylalanine and Tyrosine, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | DIL | PHENYTOIN TOTAL United Health Services Laboratories | 
      
        | PNYF | Phenytoin, Free, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PNTFT | Phenytoin, Total and Free, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PHMA | Phoma betae, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PETH | Phosphatidylethanol Confirmation, Blood Mayo Clinic Laboratories in Rochester | 
      
        | PSPTG | Phosphatidylserine/Prothrombin Antibody, IgG, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PLA2I | Phospholipase A2 Receptor, Immunofluorescence, Serum Mayo Clinic Laboratories in Rochester | 
      
        | CLPMG | Phospholipid (Cardiolipin) Antibodies, IgG and IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PHOS | PHOSPHORUS United Health Services Laboratories | 
      
        | UPO4 | PHOSPHORUS RANDOM URINE United Health Services Laboratories | 
      
        | UP4B | PHOSPHORUS URINE 24HR United Health Services Laboratories | 
      
        | PAHD | Phthalic Anhydride, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PINE | Pine Nut, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PNAP | Pineapple, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PINW | PINWORM PREP United Health Services Laboratories |