| YCDIFPCR | C Difficile by RT-PCR | Reverse Transcription Polymerase Chain Reaction |
| YCPT | C Peptide | — |
| YCRP | C Reactive Protein | Particle-Enhanced Immunoturbidimetric Assay |
| YCTPTD | C-Telopeptide, Beta-Cross-Linked, Serum | — |
| YCDIFB | C. diff toxin B gene (tcdB) by PCR | — |
| YC1EI | C1-Esterase Inhibitor | — |
| YCEIF | C1-Esterase Inhibitor Functional | — |
| YC3AR | C3a Level By RIA | — |
| YC4AR | C4a Level By RIA | — |
| YCA153 | CA 15-3, Cancer Antigen - Breast | Instrument: Beckman Coulter DxI 9000 |
| YC199 | CA 19-9, Cancer Antigen - GI | — |
| YCABBGE | Cabbage IgE | — |
| YCADUA | Cadmium, 24 Hr. Urine | — |
| YCADB | Cadmium, Blood | — |
| YCFNE | Caffeine, Serum or Plasma | — |
| YCALT | Calcitonin | — |
| YCA | Calcium | Photometric, Colorimetric Method |
| YUCA | Calcium Urine, Random | Photometric, Colorimetric Method |
| YTCA | Calcium, 24 Hr. Urine | Photometric, Colorimetric Method |
| YCLPTN | Calprotectin, Stool | — |
| YCALR | CALR Exon 9 Mutation Analysis | — |
| YCAMPY | Campylobacter Stool Culture | — |
| YC272 | Cancer Antigen - CA 27.29 | — |
| YC125 | Cancer Antigen 125 | Electrochemiluminescence Immunoassay |
| YC12M | Cancer Antigen 125 Serial Monitor | Electrochemiluminescence Immunoassay |
| YCAQT | Candida albicans Antibodies, IgG, IgM, IgA | — |
| YCAURS | Candida auris PCR w/reflex to culture | — |
| YCVTV | Candida Vaginitis & Trichomonas Vaginalis (CV/TV) by TMA | Transcription-Mediated Amplification |
| YFCBDS | Cannabidiol (Epidiolex) Serum | — |
| YCARBB | Carbamazepine | — |
| YCMZF | Carbamazepine, Free & Total | — |
| YCARPG | Carbamylated Protein (CarP) Antibody, IgG | — |
| YLVDPA | Carbidopa and Levodopa Quantitative, Serum | — |
| YCDT | Carbohydrate Deficient Transferrin for Alcohol Use | — |
| YCRUR | Carbohydrate, Random Urine | — |
| YHC3 | Carbon Dioxide | Enzymatic, Kinetic, Spectrophotometric Method |
| YCOV | Carbon Monoxide (Carboxyhemoglobin) | — |
| YCEAS | Carcinoembryonic AG | Electrochemiluminescence Immunoassay |
| YCEAFL | Carcinoembryonic Antigen, Fluid | — |
| YCARPP | Cardiac Panel | Fluorescence Immunoassay |
| YACABP | Cardiolipin Antibodies, IgG and IgM | Multiplex Flow Immunoassay |
| YACLB | Cardiolipin Antibodies, IgG, IgM, IgA | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) |
| YACLA | Cardiolipin Antibody, IgA | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) |
| YCDCARI | Carisoprodol & Metabolite, UR, Quant | — |
| YCARNPAN | Carnitine Panel | — |
| YCARN | Carnitine, Free & Total | — |
| YCAR | Carotene | — |
| YCARRT | Carrot IgE | — |
| YCASHEW | Cashew, IgE | — |
| YCASRZ | CASR Gene, Full Gene Analysis | — |
| YCATSUP | Catecholamines Fractionated, Plasma, Supine | — |
| YCATUPR | Catecholamines Fractionated, Plasma, Upright | — |
| YCTFU | Catecholamines Fractionated, Urine, Random or 24 Hr. | — |
| YCATFSH | Catfish IgE | — |
| YTIPCU | Catheter Tip Culture | — |
| YCBFB | CBFB-MYH11 inv(16) Detection, Quant | — |
| YCD3LV | CD3, CD19, CD56 Levels | — |
| YCD57NK | CD57 (HNK1) + NK Cells | — |
| YCELERY | Celery IgE | — |
| YCDGF | Celiac Disease Gluten-Free Cascade | — |
| YCELRFX | Celiac Disease Reflexive Cascade | — |
| YCELSCR | Celiac Disease Screen | — |
| YCDQDNAR | Celiac HLA DQ2, DQ8 | DNA Amplification and Liquid Bead Array Detection |
| YCENO | Cenobamate, Serum or Plasma | — |
| YCTRM | Centromere B Antibody, IgG | — |
| YCERAM | Ceramides, Plasma | — |
| YCERU | Ceruloplasmin | — |
| YPMP22 | Charcot-Marie-Tooth & Related Hereditary Neuropathies w/reflex | — |
| YCHERRY | Cherry IgE | — |
| YCHICKN | Chicken IgE | — |
| YCHKPEA | Chickpea (Garbanzo Bean) IgE | — |
| YCART | Chikungunya Antibodies, IgG, IgM | — |
| YCHIKPN | Chikungunya by PCR | — |
| YCHITO | Chitotriosidase Assay (CHITO) | Fluorometric Enzyme Assay |
| YCHLPAP | Chlamydia Antibody Panel, IgG & IgM by IFA | — |
| YCPGMA | Chlamydia pneumoniae IgG, IgM, IgA | Immunofluorescence |
| YCGAMD | Chlamydia trachomatis & N. gonorrhoeae, TMA, Eye Only | — |
| YCTCU | Chlamydia trachomatis Culture | — |
| YCTLGV | Chlamydia trachomatis L serovars (LGV) by PCR | — |
| YCL | Chloride | Indirect Ion-Selective Electrode Method |
| YFCHL | Chloride, Body Fluid | Indirect Ion-Selective Electrode Method |
| YTCLL | Chloride, Urine, 24 Hr. | — |
| YUCLL | Chloride, Urine, Random | — |
| YCHOCLT | Chocolate, IgE | — |
| YFCCK | Cholecystokinin (CCK) | Direct Radioimmunoassay |
| YCHOL | Cholesterol | Enzymatic Colorimetric Method |
| YCHOLF | Cholesterol, Body Fluid | Enzymatic Colorimetric Method |
| YCHLS | Cholinesterase (Pseudocholinesterase), Total | — |
| YCEST | Cholinesterase, RBC | — |
| YANTCA | Chromatin Antibody, IgG | Multiplex Flow Immunoassay |
| YCRS | Chromium, Serum | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) |
| YCHRUR | Chromium, Urine (Random or 24 Hour) | — |
| YCH9 | Chromogenic Factor IX Activity Assay, Plasma | — |
| YCHGN | Chromogranin A | — |
| YCBL | Chromosome Analysis, Blood | — |
| YCIDP | Chronic Inflammatory Demyelinating Polyradiculoneuropathy/Nodopathy Evaluation | — |
| YCLLDF | Chronic Lymphocytic Leukemia, Diagnostic FISH, Varies | — |
| YCUINDX | Chronic Urticaria Index | — |
| YCHYMF | Chymotrypsin, Fecal | — |
| YCICP | Circulating Immune Complex Panel | — |
| YC1QB | Circulating Immune Complex, C1q Binding | — |
| YCIT | Citric Acid, Random or 24 Hr. Urine (Citrate) | — |
| YCKIS | CK (Creatine Kinase) Isoenzymes, Serum | — |
| YCK | CK, Total | Kinetic, Spectrophotometric UV Method |
| YCLOB | Clobazam (Onfi) | — |
| YCLONZ | Clonazepam | — |
| YCLOZ | Clozapine and Metabolites, Serum | — |
| YCBLTR | Cobalt, Serum or Plasma | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) |
| YCOCAS | Cocaine Metabolite, Serum or Plasma, Quant | — |
| YCOCA | Cocaine Metabolite, Urine Quant | — |
| YCAPAB | Coccidioides Antibodies IgG, IgM by CF | — |
| YCOCAP | Coccidioides Antibodies Panel, Serum | — |
| YCOCAR | Coccidioides Antibodies Reflex Panel, Serum | — |
| YCOCG | Coccidioides Antibody, IgG (RPS) | — |
| YCOCM | Coccidioides Antibody, IgM | — |
| YCOCNUT | Coconut, IgE | — |
| YCOQ10 | Coenzyme Q10, Total | — |
| YCAGLT | Cold Agglutinins Titer | — |
| YCTVII | Collagen Type VII Antibody IgG by ELISA | — |
| YCRCGP | Common Red Cell Genotype Panel | — |
| YAH50 | Complement Activity, Alternative Pathway AH50 | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) |
| YC2 | Complement C2 | — |
| YCC1Q | Complement Component 1Q (C1q) | — |
| YCOMP5 | Complement Component 5 | — |
| YC3C4 | Complement Profile (C3 & C4) | — |
| YC3 | Complement, C3 | — |
| YC4 | Complement, C4 | — |
| YCH50 | Complement, Total | — |
| YCBC | Complete Blood Count | Fluorescent Flow Cytometry; DC Impedance with Hydrodynamic Focusing; Cyanide-Free SLS Method |
| YCBC6 | Complete Blood Count w/ 6 part differential | Fluorescent Flow Cytometry; DC Impedance with Hydrodynamic Focusing; Cyanide-Free SLS Method |
| YCPSA | Complexed PSA | — |
| YCMPM | Comprehensive Metabolic Panel | Please see individual components for methodology |
| YRCDIFD | Confirmatory C Diff Toxin | — |
| YCCMVD | Congenital CMV PCR (patients <21 days old) | — |
| YANAC | Connective Tissue Diseases Profile | Enzyme-Linked Immunosorbent Assay (ELISA) |
| YCAP2GR | Contactin-Assoc. Protein-2 Ab, IgG CBA-IFA w/reflex to Titer | — |
| YCOPEP | Copeptin proAVP, Plasma (ADH) | — |
| YCOPP | Copper, Free, Serum or Plasma | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) |
| YCUR | Copper, RBC | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) |
| YCU | Copper, Serum or Plasma | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) |
| YXCU | Copper, Urine, Random or 24 Hr | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) |
| YCRN | Corn IgE | — |
| YCBGR | Corticosteroid Binding Globulin | — |
| YCRT | Cortisol | Electrochemiluminescence Immunoassay |
| YCRTA | Cortisol, AM | Electrochemiluminescence Immunoassay |
| YCRTP | Cortisol, PM | Electrochemiluminescence Immunoassay |
| YSALCOR | Cortisol, Saliva | — |
| YCRTSL | Cortisol, Serum Free | — |
| YCRTSF | Cortisol, Serum Free with CBG | HPLC/Tandem Mass Spectrometry; Radioimmunoassay (RIA); calculation of free cortisol |
| YUCOR | Cortisol, Urine Free | Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YCOTSCU | Cotinine Screen, Urine | — |
| YCOV19P | COVID 19 by RT-PCR | Reverse Transcription Polymerase Chain Reaction |
| YCOVNAT | COVID-19 IgG, Qual by CIA (Natural Infection Response) | — |
| YCOW | Cow Hair/Dander IgE | — |
| YQFGM | Coxiella burnetii (Q Fever) Antibodies, IgG & IgM, Phase I/II w/Reflex to Titer | — |
| YCBBRP | Coxiella burnetti (Q fever), Molecular Det, PCR, Blood | — |
| YCOXSAP | Coxsackie A Antibodies (Serotypes 2, 4, 7, 9, 10 & 16) | — |
| YCOXS | Coxsackie B Virus Antibodies | — |
| YCRAB | Crab IgE | — |
| YCRDPU | Creatine Disorders Panel, Urine | — |
| YCRTE | Creatine, Serum | — |
| YCRET | Creatinine | Kinetic Colorimetric Jaffé Method |
| YCRCL | Creatinine Clearance | Kinetic Colorimetric Assay |
| YUCRE | Creatinine Urine, Random | Kinetic Colorimetric Assay |
| YTCRE | Creatinine Values, 24 Hr. Urine | Kinetic Colorimetric Assay |
| YCRETBF | Creatinine, Body Fluid | Kinetic Colorimetric Jaffé Method |
| YCRPC | CRP, Cardiac | Particle-Enhanced Immunoturbidimetric Assay |
| YCRFR | Cryofibrinogen | — |
| YCRYR | Cryoglobulin | — |
| YCRYQR | Cryoglobulin Qual w/reflex to IFE Typing & Quant IgA, IgG, IgM | — |
| YCRYQ | Cryoglobulin w/reflex to Quant IgA, IgG, IgM | — |
| YCRAG | Cryptococcal Antigen | — |
| YCACR | Cryptococcal Antigen, CSF | — |
| YCSDMN | Cryptosporidium and Coccidia Exam, Fecal | — |
| YCRYSPOR | Cryptosporidium Antigen by EIA | Qualitative Enzyme Immunoassay |
| YCCT | CSF Cell Count and Differential | — |
| YCSFCU | CSF Culture | — |
| YCULTAER | Culture, Aerobic w/Gram Stain | Culture |
| YCULTAA | Culture, Aerobic/Anaerobic Culture | Culture |
| YCULTGAS | Culture, Group A Strep | Culture |
| YCULTGBS | Culture, Group B Strep | Culture |
| YCULTH | Culture, Throat | Culture |
| YCULTURN | Culture, Urine | Culture |
| YCURVUL | Curvularia lunata IgE | — |
| YCIAS | Cutaneous Immunofluorescence Ab (IgG & IgG4), Serum | — |
| YCYAN | Cyanide | — |
| YCCPA | Cyclic Citrullinated Peptide Antibody, IgG | Multiplex Flow Immunoassay |
| YCCPAG | Cyclic Citrullinated Peptide Antibody, IgG and IgA | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) |
| YCSNL | Cycloserine Level | — |
| YCLBR | Cyclosporine | — |
| YCMBLT | Cymbalta Level (Duloxetine) | — |
| YCYSTC | Cystatin C | — |
| YCFVAR | Cystic Fibrosis (CFTR) 165 Pathogenic Variants | — |
| YCFTRDD | Cystic Fibrosis (CFTR) 165 w/reflex to Seq & Del/Dup | — |
| YCYSIGG | Cysticercosis Antibody, IgG | — |
| YCYSIGGCSF | Cysticercosis Antibody, IgG, CSF | — |
| YCSQU | Cystine Quantitative, 24 Hr. Urine | — |
| YCYPGP | Cytochrome P450 Genotyping Panel | — |
| YCYTOP | Cytokine Panel 13, Serum | Quantitative Multiplex Bead Assay |
| YCMVQB | Cytomegalovirus (CMV) DNA Detection & Quantitation, Blood | — |
| YCMVDO | Cytomegalovirus (CMV) DNA Detection, Other (patients >=21 days old) | — |
| YCMVQO | Cytomegalovirus (CMV) Quantitative PCR | — |
| YCMV | Cytomegalovirus Antibody (CMV), IgG | Multiplex Flow Immunoassay |
| YCMMQ | Cytomegalovirus Antibody (CMV), IgM | Muliplex Flow Immunoassay |
| YCMGA | Cytomegalovirus IgG Avidity, ELISA | — |
