URMC / Encyclopedia / Collection Pacemaker Insertion- Transvenous Pancreas Scan Pancreatic Polypeptide Pap Pap Test Parathyroid Hormone Parvovirus Patent Foramen Ovale Transcatheter Repair Pavlik Harness Treatment for Children Peak Flow Measurement Pelvic Ultrasound Percutaneous Balloon Pericardiotomy Percutaneous Transcatheter Treatment of Deep Vein Thrombosis (DVT) Pericardial Window Pericardiectomy Pericardiocentesis Phenobarbital Phenylketonuria (PKU) Phenytoin Phosphorus Photodynamic Therapy for Age-Related Macular Degeneration (AMD) Plasmodium (Blood) Platelet Antibody Platelets Pleural Biopsy Pneumatic Retinopexy Pneumocystis Jirovecii (Tissue, Fluid) Pneumonectomy Porphyrins (Urine) Positron Emission Tomography (PET) Potassium Prealbumin (Blood) Procedural Sedation Proctectomy Progesterone Proinsulin (Blood) Prolactin (Blood) Prostate Biopsy Prostate-Specific Antigen (PSA) Protein C (Blood) Protein Electrophoresis (Blood) Protein S (Blood) Prothrombin Time Protoporphyrin (Blood) Pulmonary Angiogram Pulmonary Artery Catheterization Pulmonary Function Tests Pulse Oximetry