Cystic Respiratory Culture Cyclic Citrullinated Peptide (CCP) Antibody, IgG Cysticercosis Antibody, IgG by ELISA Cyclin D1, SP4 by Immunohistochemistry Cysticercosis Antibody, IgG by ELISA (CSF) Cyclobenzaprine Quantitative, Serum or Plasma Cystine Quantitative, Urine Cyclobenzaprine Quantitative, Urine Cystinuria Panel Cyclosporine A by Tandem Mass Spectrometry Cytochrome P450 2C19, CYP2C19 – 9 Variants Cyclosporine A, 2-Hour Post Dose (C2) by Tandem Mass Spectrometry Cytochrome P450 2C9, CYP2C9 – 2 Variants CYFRA 21-1 (Cytokeratin 19 Fragment), Serum Cytochrome P450 2D6 (CYP2D6) 14 Variants and Gene Duplication Cystatin C, Serum Cytochrome P450 3A5 Genotyping, CYP3A5, 2 Variants Cystic Fibrosis (CFTR) 165 Pathogenic Variants Cytochrome P450 Genotype Panel Cytokine Production by Mononuclear Cells in Response to Antigen and Mitogen Stimulation