| 2064 | C-Peptide |
| 2320 | C-Reactive Protein |
| 2560 | C-Reactive Protein, Highly Sensitive |
| 2616 | C. difficile Antigen + Toxin |
| 91034 | C1 Esterase Inhibitor Functional |
| 91035 | C1 Esterase Inhibitor Panel |
| 91036 | C1Q Binding Assay |
| 91067 | C2, Complement |
| 91249 | C282Y Mutation (Hemochromatosis) |
| 2356 | C3, Complement |
| 2357 | C4, Complement |
| 91068 | C5, Complement |
| 2278 | CA 125 |
| 2629 | CA 15-3 |
| 5019 | CA 19-9 |
| 91043 | CA 27.29 |
| 91044 | CA 72.4 |
| 91037 | Cadmium Exposure Panel - OSHA |
| 91038 | Cadmium, Blood |
| 91039 | Cadmium, Urine |
| 91040 | Caffeine |
| 91041 | Calcitonin |
| 91229 | Calcitrol |
| 91042 | Calcium, Ionized |
| 1016 | Calcium, Serum or Plasma |
| 1106 | Calcium, Urine Quant |
| 91208 | Calculus Analysis |
| 4062 | Campylobacter Culture |
| 2278 | Cancer Antigen 125 |
| 2629 | Cancer Antigen 15-3 |
| 5019 | Cancer Antigen 19-9 |
| 91043 | Cancer Antigen 27.29 |
| 91044 | Cancer Antigen 72.4 |
| 91271 | Candida Antibody |
| 2110 | Carbamazepine |
| 2110 | Carbatrol |
| 1025 | Carbon Dioxide |
| 2453 | Carbon Monoxide |
| 2453 | Carboxyhemoglobin |
| 2085 | Carcinoembryonic Antigen |
| 2610 | Cardiac Panel |
| 1454 | Cardiac Risk Panel |
| 2640 | Cardiolipin Antibodies, IgG / IgM |
| 91047 | Carnitine, Total |
| 91048 | Carotene, Serum Total |
| 91028 | Cat Scratch Fever |
| 91242 | Catecholamines, Plasma |
| 91049 | Catecholamines, Urine Free |
| 3000 | CBC |
| 3005 | CBC without DIFF |
| 93539 | CCP |
| 91050 | CD4 Panel |
| 2085 | CEA |
| 91113 | Celiac Disease Panel |
| 91444 | Cell Cept |
| 3715 | Cell Count & Differential , Synovial Fluid |
| 3615 | Cell Count & Differential, CSF |
| 91341 | Celontin |
| 2331 | Centromere AB |
| 3600 | Cerebrospinal Fluid Panel |
| 2615 | Ceruloplasmin |
| 91075 | CF Mutation |
| 91066 | CH100 |
| 91066 | CH50 |
| 91236 | Chicken Pox Antibodies, IgG / IgM |
| 91235 | Chicken Pox Antibody, IgG |
| 91322 | Chicken Pox Antibody, IgM |
| 91361 | Chicken Pox DFA w/Reflex |
| 91052 | Chlamydia Antibody Panel, IgG |
| 91246 | Chlamydia Antibody Panel, IgM |
| 1131 | Chlamydia Aptima |
| 91347 | Chlamydia trachomatis Culture |
| 1132 | Chlamydia/GC Aptima |
| 1024 | Chloride, Serum or Plasma |
| 1107 | Chloride, Urine Quant |
| 2117 | Choledyl |
| 1017 | Cholesterol |
| 2030 | Cholesterol - HDL |
| 2032 | Cholesterol - LDL Direct |
| 1454 | Cholesterol - Lipid Panel |
| 91412 | Cholinesterase Group |
| 91055 | Cholinesterase, RBC/Hb Ratio |
| 91193 | Cholinesterase, Serum/Plasma |
| 91056 | Chromium, Serum |
| 91300 | Chromium, Urine |
| 91057 | Chromogranin A |
| 91058 | Chromosome, Amniotic Fluid |
| 91059 | Chromosome, Blood |
| 91060 | Citrate, Serum |
| 91061 | Citrate, Urine |
| 91061 | Citric Acid, Urine |
| 93539 | Citrullinated Peptide |
| 1015 | CK |
| 2220 | CK Isoenzymes |
| 2198 | CK MB Mass |
| 1024 | CL, Serum or Plasma |
| 1107 | CL, Urine Quant |
| 91062 | Clomipramine + Metabolite |
| 91063 | Clonazepam |
| 2616 | Clostridium difficile Antigen + Toxin A/B |
| 91064 | Clozapine |
| 91064 | Clozaril |
| 1943 | CMP |
| 2381 | CMV Antibodies, IgG / IgM |
| 2382 | CMV Antibody, IgG |
| 2383 | CMV Antibody, IgM |
| 91329 | CMV by PCR |
| 91326 | CMV Culture |
| 91394 | CMV Quantitation by PCR |
| 1025 | CO2 |
| 1428 | Coagulation Panel |
| 2126 | Cobalamin |
| 91313 | Cocaine, GCMS |
| 91065 | Coccidioides Antibodies, IgG / IgM |
| 91414 | Cochlear 68KD |
| 2310 | Cold Agglutinins |
| 91067 | Complement Component 2 |
| 2356 | Complement Component 3 |
| 2357 | Complement Component 4 |
| 91068 | Complement Component 5 |
| 91066 | Complement, Total |
| 3000 | Complete Blood Count |
| 3005 | Complete Blood Count without DIFF |
| 91001 | Compound S |
| 1943 | Comprehensive Metabolic Panel |
| 3820 | Coombs, Direct (Anti-Human Globulin) |
| 3838 | Coombs, Indirect Auto(Anti-Human Globulin) |
| 91069 | Copper, Serum |
| 91070 | Copper, Urine |
| 91183 | Coproporphyrin, Fecal |
| 91342 | Coproporphyrin, Urine Fractionated |
| 3343 | Coproporphyrin, Urine Qual |
| 91017 | Cordarone |
| 5016 | Corticotropin |
| 2073 | Cortisol (AM) |
| 2081 | Cortisol (PM) |
| 1498 | Cortisol Panel |
| 91071 | Cortisol, Urinary Free |
| 1498 | Cosyntropin Panel |
| 91352 | Cotinine |
| 1015 | CPK |
| 2220 | CPK Isoenzymes |
| 1015 | Creatine Kinase |
| 2198 | Creatine Kinase - MB |
| 2220 | Creatine Kinase Isoenzymes |
| 1100 | Creatinine Clearance |
| 1014 | Creatinine, Serum or Plasma |
| 1135 | Creatinine, Urine |
| 1101 | Creatinine, Urine Quant |
| 2320 | CRP |
| 2560 | CRP, Highly Sensitive |
| 2017 | Cryoglobulins |
| 91073 | Cryptococcus Antigen |
| 4684 | Cryptosporidium Ag |
| 3703 | Crystals, Synovial Fluid |
| 4608 | Crytposporidium, Acid-Fast Bacillus |
| 2048 | CSF Glucose |
| 3600 | CSF Panel |
| 2047 | CSF Protein |
| 91404 | CU Index |
| 4050 | Culture, Aerobic / Anaerobic |
| 4007 | Culture, Aerobic Identification |
| 4030 | Culture, Aerobic [w/ Gram Stain] |
| 4006 | Culture, Aerobic [w/o Gram Stain] |
| 91350 | Culture, AFB [Blood, Bone Marrow] |
| 4204 | Culture, AFB [Non-Blood / Bone Marrow] |
| 4009 | Culture, Anaerobic Indentification |
| 4040 | Culture, Blood |
| 4031 | Culture, Bordetella Pertussis |
| 4062 | Culture, Campylobacter |
| 91326 | Culture, Cytomegalovirus |
| 4015 | Culture, Definitive Throat |
| 4072 | Culture, Environmental |
| 4405 | Culture, Fungus - Blood |
| 4402 | Culture, Fungus - ID |
| 4410 | Culture, Fungus - Other Sources |
| 4404 | Culture, Fungus - Skin |
| 4022 | Culture, GC |
| 4032 | Culture, Genital |
| 4017 | Culture, Group B Strep |
| 2465 | Culture, Herpes Simplex |
| 91254 | Culture, Mycoplasma pneumoniae |
| 4045 | Culture, Sputum |
| 4060 | Culture, Stool |
| 4012 | Culture, Strep |
| 4058 | Culture, Trichomonas vaginalis |
| 4020 | Culture, Urine |
| 91260 | Culture, Viral |
| 93539 | Cyclic Citrullinated Peptide Antibody, IgG |
| 4608 | Cyclospora, Acid-Fast Bacillus |
| 91074 | Cyclosporin TDX |
| 91074 | Cyclosporine A |
| 91075 | Cystic Fibrosis, Mutation Panel |
| 2381 | Cytomegalovirus Antibodies, IgG / IgM |
| 2382 | Cytomegalovirus Antibody, IgG |
| 2383 | Cytomegalovirus Antibody, IgM |
| 91329 | Cytomegalovirus Detection by PCR |
| 91326 | Cytomegalovirus, Culture |
| 91394 | Cytomeglovirus Quant PCR |