| PANESM | Pancreatic Elastase, Feces Mayo Clinic Laboratories in Rochester | 
      
        | PAPYM | Papaya, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PAPRKA | Paprika, IgE, Serum, LAB1477 St. Luke's Hospital Cedar Rapids | 
      
        | PAVAL | Paraneoplastic, Autoantibody Evaluation, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PAABEM | Paraneoplastic, Autoantibody Evaluation, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | PARIDM | Parasite Identification, Varies Mayo Clinic Laboratories in Rochester | 
      
        | PTHIN | Parathyroid Hormone (PTH) Intact LAB108 UnityPoint Finley | 
      
        | PTHOR | Parathyroid Hormone (PTH), Intraoperative LAB3245 UnityPoint Finley | 
      
        | PTHRPM | Parathyroid Hormone-Related Peptide, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | PPAPM | Parental Sample Prep for Prenatal Microarray Testing, Blood Mayo Clinic Laboratories in Rochester | 
      
        | PARS | Parsley, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PARVOM | Parvovirus B19 Antibodies, IgG and IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PARPCM | Parvovirus B19, Molecular Detection, PCR, Varies Mayo Clinic Laboratories in Rochester | 
      
        | PEACH | Peach, IgE, Serum, LAB1604 St. Luke's Hospital Cedar Rapids | 
      
        | PEANUT | Peanut, IgE, Serum, LAB592 St. Luke's Hospital Cedar Rapids | 
      
        | PEAR | Pear, IgE, Serum, LAB2650 St. Luke's Hospital Cedar Rapids | 
      
        | PCNHKM | Pecan Hickory, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PECAN | Pecan Nut, IgE, Serum, LAB1622 St. Luke's Hospital Cedar Rapids | 
      
        | PAS3M | Pediatric Allergy Screen <3 Years, Serum Mayo Clinic Laboratories in Rochester | 
      
        | PNMOLD | Penicillium notatum Mold, IgE, Serum, LAB1220 St. Luke's Hospital Cedar Rapids | 
      
        | PATHSM | Peripheral Blood Smear to Pathology Panel UnityPoint Finley | 
      
        | ACASMM | Pernicious Anemia Cascade, Serum Mayo Clinic Laboratories in Rochester | 
      
        | FPH | pH Miscellaneous Fluid LAB110 UnityPoint Finley | 
      
        | PHENO | Phenobarbital LAB30  Pathology Laboratory | 
      
        | PTN | Phenytoin (Dilantin) LAB31 UnityPoint Finley |