| YBCD20 | B-Cell CD20 Expression by FLOW, Quant | Flow Cytometry |
| YIABCS | B-Cell Phenotyping Profile for Immunodeficiency & Immune Competence Assessment, Blood | — |
| YBCELSA | B-Cell Subset Analysis | Flow Cytometry |
| YLYMTT | B. burgdorferi VIsE1/pepC10 Abs, Total by ELISA w/reflex | — |
| YBDG | Babesia duncani (WA1) Antibody, IgG | Indirect Fluorescence Assay (IFA) |
| YBMAGM | Babesia microti Antibodies, IgG and IgM | — |
| YBABPCR | Babesia Species by PCR | Qualitative Polymerase Chain Reaction (PCR) |
| YBACLS | Baclofen, Serum | Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry |
| YORGCU | Bacterial Identification | — |
| YBV | Bacterial Vaginosis by TMA | Transcription-Mediated Amplification |
| YBRYST | Baker/Brewer Yeast, IgE | — |
| YBANANA | Banana IgE | Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay |
| YBARBSP | Barbiturates, Serum or Plasma, Quant | Quantitative Gas Chromatography-Mass Spectrometry (GC-MS) / Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YBARBUQ | Barbiturates, Urine, Quantitative | Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YBARLEY | Barley IgE | Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay |
| YCSSG | Bartonella henselae (Cat Scratch) Antibodies IgG & IgM | — |
| YBARTGM | Bartonella henselae & B. quintana Antibodies, IgG & IgM | Semi-Quantitative Indirect Fluorescent Antibody (IFA) |
| YBTNA | Bartonella Species by PCR | — |
| YBMPM | Basic Metabolic Panel | Please see individual components for methodology |
| YBASSBK | Bass Black IgE | Quantitative Enzyme Immunoassay (EIA) |
| YBCRNGS | BCR-ABL1 Mutation Analysis for Tyrosine Kinase Inhibitor Resistance by Next Generation Sequencing | Massively Parallel Sequencing |
| YBCRABLNN | BCR::ABL by Reverse Transcription, Qualitative | Cepheid GeneXpert BCR::ABL1 p210 and p190 Real-time Reverse Transcription-DNA Amplification assays |
| YBWSRSS | Beckwith-Wiedemann (BWS) & Russell-Silver Syndrome (RSS) | — |
| YALLBF | Beef, IgE | Quantitative ImmunoCAP Fluorescent Enzyme Immunoassay |
| YBENZS | Benzodiazepines, Serum or Plasma, Quant | Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YBENZO | Benzodiazepines, Urine Quant | Quantitative Liquid Chromatography-Tandem Mass Spectrometry |
| YBGSEQ | Beta Globin (HBB) Gene Sequencing | Massively Parallel Sequencing |
| YBHCG | Beta HCG, Quantitative | Electrochemiluminescence Immunoassay |
| YBHCGTM | Beta HCG, Tumor Marker | Electrochemiluminescence Immunoassay |
| YOHBET | Beta Hydroxybutyrate | Beckman Coulter AU5800 |
| YBTPF | Beta Trace Protein, Body fluid | — |
| YB2GM | Beta-2 Glycoprotein 1 Antibodies, IgG & IgM | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) |
| YBET2 | Beta-2 Glycoprotein 1 Antibodies, IgG, IgM, IgA | Semi-Quantitative Enzyme-Linked Immunosorbent Assay |
| YB2GA | Beta-2 Glycoprotein 1 Antibody, IgA | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) |
| YB2MG | Beta-2 Microglobulin | Turbidimetric with the Optilite instrumentation |
| YB2MU | Beta-2-Microglobulin, Urine | Quantitative Chemiluminescent Immunoassay (CLIA) |
| YUBICA | Bicarbonate, Urine | — |
| YBAFTA | Bile Acids, Fractionated and Total by LC-MS/MS | Quantitative High Performance Liquid Chromatography-Tandem Mass Spectrometry |
| YBILA | Bile Acids, Total | Quantitative Enzymatic Assay |
| YDBIL | Bilirubin, Direct | Photometric, Colormetric Diazo Method |
| YTBIL | Bilirubin, Total | Colorimetric, Diazo Method |
| YBIOTS | Biotinidase, Serum | Spectrophotometry |
| YBISMU | Bismuth, Blood | Quantitative Inductively Coupled Plasma-Mass Spectrometry (ICP=MS) |
| YBKVQB | BK Virus (BKV) Quant, Blood | — |
| YBKDOT | BK Virus Quantitation, Urine | Quantitative Real-time PCR |
| YBLKWIL | Black Willow, IgE | — |
| YBLASTQ | Blastomyces Antigen Quantitative by EIA, Urine | — |
| YBLAAB | Blastomyces dermatitidis Abs by Immunodiffusion | — |
| YBDABR | Blastomyces dermatitidis Antibodies by Immunoassay with Reflex to Immunodiffusion, Serum | Semi-Quantitative Enzyme-Linked Immunosorbent Assay (ELISA) / Immunodiffusion |
| YBDAE | Blastomyces dermatitidis Antigen EIA | Quantitative Enzyme Immunoassay (EIA) |
| YBDIAL | Bleeding Diathesis Profile, Limited | Optical Clot-Based; Latex Immunoassay (LIA); Clauss |
| YBLCPS1 | Blood Culture | Culture |
| YBLDA | Blood Culture, BI | — |
| YBCIDR | Blood Path Panel PCR | — |
| YUREA | Blood Urea Nitrogen | Kinetic, Enzymatic UV Assay Method |
| YUREAFL | Blood Urea Nitrogen, Body Fluid | Kinetic, Enzymatic UV Assay Method |
| YBLUBRY | Blueberry IgE | — |
| YBNPP | BNP - B Natriuretic Peptide | Fluorescence Immunoassay |
| YFCT | Body Fluid Cell Count and Differential | — |
| YBCRY | Body Fluid Crystals | Microscopy |
| YBFBLD | Body Fluid Culture (Bactec) | Microbiology |
| YBFLIP | Body Fluid Lipase | Colorimetric Enzymatic Method |
| YBFTB | Body Fluid Total Bilirubin | Colorimetric, Diazo Method |
| YBPPP | Bordetella Pertussis & Parapertussis by RT-PCR | Reverse Transcription Polymerase Chain Reaction |
| YBPAAI | Bordetella pertussis Abs IgA Immunoblot | — |
| YBPAGI | Bordetella pertussis Abs IgG Immunoblot | — |
| YBPAMI | Bordetella pertussis Abs IgM Immunoblot | — |
| YBPABA | Bordetella pertussis Antibodies, IgA | — |
| YBPABAG | Bordetella pertussis Antibodies, IgA and IgG | — |
| YBORDPAN | Bordetella pertussis Antibodies, IgA, IgG, & IgM | — |
| YBPAB | Bordetella pertussis Antibodies, IgG & IgM w/reflex | — |
| YBPABG | Bordetella pertussis Antibody, IgG by ELISA | — |
| YLYGW | Borrelia burgdorferi, IgG by Immunoblot | — |
| YBRAF | BRAF Mutation | — |
| YBRZNUT | Brazil Nut IgE | — |
| YHBOCSP | BRCA1 & BRCA2 Assoc. HBOC Syndrome Panel, Seq & Del/Dup | — |
| YBROCLI | Broccoli IgE | — |
| YBWCU | Bronch Wash Culture, Gram Stain | — |
| YBALCT | Bronchial Alveolar Lavage Cell Count and Differential | Sysmex XN 9000 Series and Cytocentrifuge slide for Wright stained differential |
| YBAAS | Brucella Antibody Screen IgG/IgM | Enzyme-Linked Immunosorbent Assay (ELISA) |
| YBPAG | Bullous Pemphigoid Abs, IgG by ELISA | — |
| YBUPR | Buprenorphine and Metabolites, Urine, Quantitative | — |
| YBUSPE | Buspirone | — |
