- A test used to determine which medications work on bacteria for fungi
- Bacterial Culture, any source
- Bacterial urine culture; quantitative colony count
- Balloon dilation of large bowel using an endoscope
- Basic metabolic panel
- Beta-2 microglobulin (protein) level
- Bi-lateral (combined anterior/posterior) spinal fusion
- Bilirubin level (Direct)
- Bilirubin level (Total)
- Biopsy and/or removal of polyp of the uterus using an endoscope
- Biopsy of breast
- Biopsy of large bowel using an endoscope
- Biopsy of liver via needle inserted into skin
- Biopsy of prostate gland
- Biopsy of prostate gland
- Biopsy of the bladder using an endoscope
- Biopsy of the lining of the uterus
- Bladder stone removal (litholapaxy)
- Blepharoplasty of the lower eyelid (eye bag surgery)
- Blepharoplasty of the upper eyelid (eye bag surgery)
- Blood count, hemoglobin
- Blood count, hemoglobin and hematocrit
- Blood creatinine level
- Blood glucose (sugar) level
- Blood glucose (sugar) level after receiving dose of glucose
- Blood glucose (sugar) measurement using reagent strip
- Blood glucose (sugar) tolerance test
- Blood osmolality (concentration) measurement
- Blood potassium level
- Blood sodium level