Parasites Smear (Giemsa Stain), Blood Parvovirus B19 by PCR Pentazocine Quantitation, Serum or Plasma Parvovirus B19 by Quantitative PCR Pentobarbital, Serum or Plasma Parvovirus B19, by PCR, Bone Marrow Perampanel Quantitative, Serum or Plasma PAX2 by Immunohistochemistry Periodic Fever Syndromes Deletion/Duplication, 6 Genes PAX3-FOXO1 and PAX7-FOXO1 Translocations by RT-PCR (Inactive as of 11/14/16. Refer to 2001497) Periodic Fever Syndromes Panel, Sequencing (7 Genes) and Deletion/Duplication, (6 Genes) Pax-5 by Immunohistochemistry PAX8 by Immunohistochemistry Parechovirus Detection by PCR PAX8-PPARG Translocations Detection by PCR Paroxetine Quantitative, Serum or Plasma PCA3 – Prostate Cancer Biomarker by Transcription-Mediated Amplification Paroxysmal Nocturnal Hemoglobinuria (PNH), High Sensitivity, RBC and WBC PD-1 by Immunohistochemistry Paroxysmal Nocturnal Hemoglobinuria, High Sensitivity, RBC