P504S (AMACR) by Immunohistochemistry `Pemphigus Antibody IgA 14-3-3 Protein Tau/Theta with Reflex to RT-QuIC Analysis, CSF 1p/19q Deletion by FISH P1 Antigen Typing – Patient p16 by Immunohistochemistry p21 (Waf1/Cip 1) by Immunohistochemistry P40 by Immunohistochemistry Pancreatitis (PRSS1) Sequencing Parathyroid Hormone, Intact with Calcium p53 by Immunohistochemistry Pancreatitis (SPINK1) Sequencing Parathyroid Hormone-Related Peptide (PTHrP) by LC-MS/MS, Plasma P53 Mutation Analysis, Plasma-Based (Leumeta) Pancreatitis, Panel (CFTR, CTRC, PRSS1, SPINK1) Sequencing p53 with Interpretation by Immunohistochemistry Pancreatobiliary FISH P57 by Immunohistochemistry Parainfluenza 1-4 by RT-PCR p63 by Immunohistochemistry