Boston Bowel Preparation Scale (BBPS)
Boston Bowel Preparation Scale (Lai 2009): right, transverse, and left colon segments each 0-3; a total >= 6 (each segment >= 2) is adequate.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Right colon segment
- 2
- Transverse colon segment
- 2
- Left colon segment
- 2
Result: Boston Bowel Prep 6 of 9 — adequate (>= 6).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- >= 6
- Adequate preparation (with each segment >= 2).
- < 6
- Inadequate (right + transverse + left colon each 0-3). A preparation-quality score, not a diagnosis.
What you enter
- Right colon segment (0-3)
- Transverse colon segment (0-3)
- Left colon segment (0-3)
How this is calculated
Lai EJ, Calderwood AH, Doros G, Fix OK, Jacobson BC. The Boston bowel preparation scale: a valid and reliable instrument for colonoscopy-oriented research. Gastrointest Endosc. 2009;69(3 Pt 2):620-625. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.