| VGCCA | P/Q-Type Voltage-Gated Calcium Channel (VGCC) Antibody |
| PMDSU | Pain Management Drug Screen with Interpretation, Urine |
| PMPRQ | Pain Management Panel, Screen with Reflex to Quantitation |
| PALIP | Paliperidone (Invega) |
| PCRTN | Pancreastatin |
| PNCRE | Pancreatic Elastase, Fecal |
| PPTD | Pancreatic Polypeptide |
| PANCNGS | Pancreatitis Panel (CFTR, CTRC, PRSS1, SPINK1), Sequencing |
| PRWASP | Paper Wasp IgE |
| PARANE | Paraneoplastic Autoantibody Evaluation |
| PARARE | Paraneoplastic Reflexive Panel |
| ECTO | Parasite Exam |
| MALP | Parasite Exam, Blood |
| PTHRP | Parathyroid Hormone Related Peptide (PTHrP) |
| APCA | Parietal Cell Antibody, IgG |
| PNHPAN | Paroxysmal Nocturnal Hemoglobinuria Panel, RBC and WBC |
| PNHRW | Paroxysmal Nocturnal Hemoglobinuria, High Sensitivity, RBC |
| PNHW | Paroxysmal Nocturnal Hemoglobinuria, High Sensitivity, WBC |
| PARVO | Parvovirus B19 Antibodies, IgG & IgM |
| PB19P | Parvovirus B19 DNA Detection |
| PXIL | Paxil (Paroxetine) |
| PEACH | Peach IgE |
| PEANUT | Peanut, IgE |
| PECNUT | Pecan (Food) IgE |
| PECAN | Pecan/Hickory Tree IgE |
| PGOID | Pemphigoid Ab Panel, IgG/IgA |
| PEMPHI | Pemphigus Panel |
| CANNUM | Pepper Bell/Paprika (Capsicum annuum) IgE |
| FPEPS | Pepsinogen I |
| PERAMP | Perampanel Quant, Serum or Plasma |
| PRFEV | Periodic Fever Syndromes Panel |
| NPPAN | Peripheral Neuropathy Genetic Panels (NGS), Blood |
| PDFCU | Peritoneal Dialysis Fluid (PDF) Culture |
| ACASM | Pernicious Anemia Cascade |
| FPH | pH, Body Fluid |
| FPHL | pH, Fecal |
| PNCDN | Phencyclidine (PCP) Confirmation/Quantitation - Urine |
| PCPQ | Phencyclidine (PCP) Quant, Serum or Plasma |
| PHENOB | Phenobarbital |
| PSII | PhenoSense Integrase Inhibitor |
| PHTN | Phenytoin (Dilantin) |
| FPHE | Phenytoin, Free |
| PHFT | Phenytoin, Free and Total (Dilantin) |
| PETHL | Phosphatidylethanol (PEth) |
| APSPT | Phosphatidylserine and Prothrombin Abs, IgG/IgM |
| APPDL | Phosphatidylserine Antibodies, IgG, IgM, and IgA |
| PT217 | Phospho-Tau 217, Plasma |
| PLA2R | Phospholipase A2 Receptor (PLA2R) Ab, IgG w/ reflex to titer |
| PHOS | Phosphorus (Inorg) |
| UPO4B | Phosphorus (PO4), Urine, 24 Hour |
| UPO4S | Phosphorus (PO4), Urine, Random |
| PINNUT | Pine Nut (Pinion), IgE |
| PINAPP | Pineapple IgE |
| PISTAC | Pistachio IgE |
| PAI1 | Plasminogen Activator Inhibitor Activity |
| PAI1G | Plasminogen Activator Inhibitor-1, PAI-1 (SERPINE1) Genotyping |
| PLAACT | Plasminogen Activity |
| PLABN | Platelet Antibody Screen, Serum |
| PAGP | Platelet Antigen Genotyping Panel |
| PAAB | Platelet Associated Antibodies, Direct Assay |
| PLT | Platelet Count |
| PMSCL | PM/Scl-100 Antibody, IgG by Immunoblot |
| PMLRA | PML :: RARA Detection by RT-PCR, Quantitative |
| PJPCR | Pneumocystis jirovecii by PCR |
| PLINK | PNH, PI-Linked Antigen |
| PLIO | Poliovirus (Types 1-3) Antibodies |
| PCBP | Polychlorinated Biphenyls (PCB) Panel, Congeners, Serum or Plasma |
| PLYMS1 | Polymyositis Panel |
| ALLPK | Pork IgE |
| PORP | Porphobilinogen (PBG), Urine, Random or 24 Hour |
| PBGDE | Porphobilinogen Deaminase, Erythrocyte |
| PORST | Porphyrins, Fecal |
| PRPRF | Porphyrins, Total with Reflex to Fractionation |
| PORS | Porphyrins, Total, Plasma or Serum |
| UQPO | Porphyrins, Urine, Random or 24 Hr. |
| POSQ | Posaconazole, Quantitation |
| PTDSA | Post Transplant Donor Specific Antibodies |
| YK | Potassium |
| FK | Potassium, Body Fluid |
| POFE | Potassium, Fecal, Random or 24 Hour |
| KRBC | Potassium, Total, RBC |
| TKU | Potassium, Urine, 24 Hour |
| KRU | Potassium, Urine, Random |
| PAB | Prealbumin |
| C2AD2 | PrecivityAD2, Plasma |
| PRBN | Pregabalin (Lyrica) |
| PREGU | Pregnancy Screen (HCG), Urine Qualitative |
| PREGNEN | Pregnenolone |
| PKA | Prekallikrein (Fletcher Factor) Activity |
| MYSL | Primidone and Metabolite (Mysoline) |
| PCTP | Procalcitonin |
| INTPT | Procollagen Type I Intact N-Terminal Propeptide |
| PRGS | Progesterone |
| PRFT | Progesterone, Free w/Total Progesterone, LC/MS-MS |
| PRIN | Proinsulin |
| PRIIR | Proinsulin, Intact/Insulin Ratio |
| PRLS | Prolactin |
| PLPMA | Prolactin, Pituitary Macroadenoma, Serum |
| FPHEG | Promethazine (Phenergan) |
| PRFN | Propafenone (Rythmol) |
| CDPROP | Propoxyphene & Metabolite, UR (Confirmation only) |
| PPXY | Propoxyphene & Metabolite, Urine Quantitation |
| PROP | Propranolol (Inderal) |
| PGD2 | Prostaglandin D2 (PG D2) Serum or Plasma |
| PD2U | Prostaglandin D2 (PG D2), Urine |
| PHI11 | Prostate Health Index (phi), Serum |
| PSA | Prostate Specific AG |
| PSK4K | Prostate-Specific Kallikrein, 4Kscore |
| PRCR | Prot/Creat Urine Ratio |
| PROTCS | Protein C & S Screen |
| PCACT | Protein C Activity (Functional) |
| PCDPRPS | Protein C Deficiency Profile |
| CAG | Protein C, Total Antigen |
| UPER | Protein Electrophoresis Urine 24 Hr. |
| SPERI | Protein Electrophoresis w/reflex to Immunofixation, Serum |
| TPEPR | Protein Electrophoresis w/reflex to Immunotyping |
| PEPCRPS | Protein Electrophoresis, CSF |
| SPE | Protein Electrophoresis, Serum |
| REPU | Protein Electrophoresis, Urine Random |
| PSTFM | Protein S Antigen, Plasma |
| PSDPRPS | Protein S Deficiency Profile |
| PSACT | Protein S Free, Antigen |
| SACT | Protein S, Functional (Activity) |
| SAG | Protein S, Total Antigen |
| UQP | Protein Urine, Random |
| TQP | Protein Values, 24 Hr. Urine |
| F2DN | Prothrombin Factor II DNA Analysis |
| PRLEY | Prothrombin Factor II/Leiden Factor V Mutation (FVLM) |
| FPF12 | Prothrombin Fragment 1+2 MoAb |
| PT | Protime |
| PPFE | Protoporphyrins Fractionation, Whole Blood |
| PROTR | Protriptyline |
| PSTFR | PSA Total & Free |
| PSDI | Pseudocholinesterase, Dibucaine Inhibition |
| PTML | PT Mixing Study |
| PTHS | PTH Serial Monitor |
| PTH2 | PTH, Intact |
| APTPT | PTT (Partial Thromboplastin Time) |
| PTTM | PTT Mixing Study |
| PPPU | Purine and Pyrimidine Panel, Random Urine |
| PYRUQ | Pyrroles, Urine |
| PYRUK | Pyruvate Kinase |
| PYRUVB | Pyruvic Acid |
