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 Peutz-Jeghers Syndrome (STK11) Sequencing Phenylalanine and Tyrosine Peutz-Jeghers Syndrome (STK11) Sequencing and Deletion/Duplication Phenylalanine Monitoring, Plasma pH, Body Fluid Phenylpropanolamine, Serum or Plasma pH, Fecal Phenylpropanolamine, Urine pH, Urine