| 91027 | B-2 Glycoprotein |
| 91029 | B-2 Microglobulin [Serum] |
| 91030 | B-2 Microglobulin [Urine] |
| 91363 | B-Cell Clonality |
| 2620 | B-Type Natriuretic Peptide |
| 91512 | B. pertussis |
| 91487 | B. pertussis Abs |
| 2140 | B12 |
| 80060 | Banana [IgE] |
| 91311 | Barbiturates, GCMS |
| 91028 | Bartonella henselae Antibodies IgG / IgM |
| 1942 | Basic Metabolic Panel |
| 80065 | Bean, Green [IgE] |
| 80063 | Bean, Navy [IgE] |
| 80063 | Bean, White [IgE] |
| 80013 | Bee, Honey [IgE] |
| 2141 | Bence Jones Protein |
| 91600 | Benzene, Urine |
| 91558 | Benzene, Whole Blood |
| 91312 | Benzodiazepine, GCMS |
| 80200 | Bermuda Grass [IgE] |
| 91048 | Beta Carotene, Serum |
| 2651 | Beta HCG, Tumor |
| 91032 | Beta Hydroxybutyric Acid |
| 80054 | Beta lactoglobulin [IgE] |
| 91027 | Beta-2 Glycoprotein 1 Antibodies, IgG/IgM |
| 91029 | Beta-2-Microglobulin, Serum |
| 91030 | Beta-2-Microglobulin, Urine |
| 2130 | Beta-hCG, Qual [Serum] |
| 2336 | Beta-hCG, Qual [Urine] |
| 2135 | Beta-hCG, Quant [Serum] |
| 1025 | Bicarbonate |
| 91458 | Bile Acids, Fractionated |
| 91328 | Bile Acids, Total |
| 2009 | Bilirubin, Direct |
| 1019 | Bilirubin, Total |
| 2014 | Bilirubin, Total + Direct |
| 2006 | Bilirubin, Total Newborn |
| 5240 | Biopsy |
| 91413 | Biotinidase |
| 80102 | Birch, Common [IgE] |
| 91356 | Bismuth, Blood |
| 91535 | BK Virus QNT PCR, Urine |
| 94070 | BK Virus Quant, Plasma |
| 93759 | Blastomyces dermatitidis Antigen EIA |
| 4040 | Blood Culture |
| 3805 | Blood Type |
| 1022 | Blood Urea Nitrogen |
| 1942 | BMP |
| 2620 | BNP |
| 93649 | Bone Alkaline phosphatase |
| 4031 | Bordella Pertussis, Culture |
| 91579 | Bordetella PCR |
| 91487 | Bordetella pertussis Antibodies, IgG/IgM |
| 91512 | Bordetella pertussis, DFA |
| 91156 | Borrelia burgdorferi Antibodies, IgG / IgM Western Blot |
| 2330 | Borrelia burgdorferi Antibody, Total |
| 80357 | Botrytis [IgE] |
| 80100 | Box Elder [IgE] |
| 2620 | Brain Natriuretic Peptide |
| 2629 | Breast Cancer Antigen 15-3 |
| 80037 | Brewer's Yeast [IgE] |
| 80202 | Brome Grass [IgE] |
| 91295 | Brucella |
| 93761 | Brucella Antibodies (IgG, IgM) |
| 91390 | Brucella Antibodies, IgG / IgM |
| 91390 | Brucella Antibody |
| 1022 | BUN |
| 2479 | BUN, Urine |
| 91580 | Buprenorphine, Urine |
| 91033 | Bupropion |