| PTU | Protein, Total, 24 Hour, Urine Mayo Clinic Laboratories in Rochester | 
      
        | TPBF | Protein, Total, Body Fluid Mayo Clinic Laboratories in Rochester | 
      
        | PTNT | Prothrombin G20210A Mutation, Blood Mayo Clinic Laboratories in Rochester | 
      
        | PST | PROTIME-INR United Health Services Laboratories | 
      
        | PPFE | Protoporphyrins, Fractionation, Whole Blood Mayo Clinic Laboratories in Rochester | 
      
        | PSAD3 | PSA DIAGNOSTIC United Health Services Laboratories | 
      
        | PSA3 | PSA SCREENING United Health Services Laboratories | 
      
        | PCHE1 | Pseudocholinesterase, Total, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PTHIN | PTH, Intact (Intra Operative) United Health Services Laboratories | 
      
        | Q17408 | PTT-LA with Reflex to HEXAGONAL PHASE CONFIRMATION United Health Services Laboratories | 
      
        | PUSE | Pumpkin Seed, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PLP | Pyridoxal 5-Phosphate, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | PYR | Pyruvic Acid, Blood Mayo Clinic Laboratories in Rochester |