Carcinoembryonic Antigen, Fluid Cancer Antigen-GI (CA 19-9), Body Fluid Carcinoembryonic Antigen, Monoclonal (CEA M) by Immunohistochemistry Carnitine, Free, Urine CD15, Leu M1 by Immunohistochemistry CD4 by Immunohistochemistry Carnitine, Total CD163 by Immunohistochemistry CD4+ T-Cell Recent Thymic Emigrants (RTEs) Carnitine, Total, Urine CD19 by Immunohistochemistry Carotene, Serum Total CD1a by Immunohistochemistry Catecholaminergic Polymorphic Ventricular Tachycardia (CPVT) Panel, 3 Genes CD2 by Immunohistochemistry Catecholamines Fractionated (Epinephrine, Norepinephrine), Plasma CD20, L26 by Immunohistochemistry Catecholamines Fractionated by LC-MS/MS, Urine Free CD200 by Immunohistochemistry Catecholamines Fractionated, Plasma