| Buprenorphine (drug abuse) |
| Blood group & RH |
| Bone marrow aspiration culture |
| Bone marrow aspiration pathology |
| Bone marrow biopsy culture |
| Bone marrow biopsy pathology |
| Borellia parasite |
| Borrelia Burgdorferi Ab (IgG) |
| Borrelia Burgdorferi Ab (IgM) |
| Borrelia Burgdorferi Ab -western blot |
| Breast dis. culture |
| Bronchia dis. culture |
| Brucella Ab (IgG) |
| Brucella Ab (IgM) |
| Brucella culture |
| Brucella PCR |
| Buccal smear |
| BK Virus |
| B2 Trancferin |
| B2 microglobuline |
| BCR/ABL (P190) PCR-ALL |
| BCR/ABL (P210) PCR-CML |
| Beta crosslaps |
| Bence jones protein |
| BhCG |
| Bilirubin |
| Bleeding time |
| Blood culture |
| Bupropion (drug abuse) |
| Buspirone (drug abuse) |
| Baclofen (drug abuse) |
| Barbiturates (drug abuse) |
| Biperiden (drug abuse) |
| Brufen (drug abuse) |
