Reid's Colposcopic Index (RCI)
Colposcopy scoring tool assessing the severity of cervical lesions based on 4 signs seen at colposcopy. Correlates with cervical intraepithelial neoplasia (CIN) grade. Score 0–8: low score = CIN 1; high score = CIN 2/3.
Score interpretation
RCI 0–2: likely low-grade change (HPV / CIN 1).
→ Manage per colposcopy programme standards; biopsy if in doubt.
RCI 3–4: overlapping lesion, likely CIN 1 or CIN 2.
→ Colposcopically directed biopsy of the worst area; manage on histology.
RCI 5–8: likely high-grade lesion (CIN 2–3).
→ Biopsy or excision (LLETZ) per colposcopy programme standards; refer if invasion is suspected.
Interpretation bands for the Reid's Colposcopy Index. Apply clinical judgement and local guidance.
References
- Reid R, Scalzi P. Genital warts and cervical cancer. VII. An improved colposcopic index for differentiating benign papillomaviral infections from high-grade cervical intraepithelial neoplasia. Am J Obstet Gynecol. 1985;153(6):611–618.
- Sellors JW, Sankaranarayanan R. Colposcopy and treatment of cervical intraepithelial neoplasia: a beginner's manual. IARC; 2003 (Table 7.2, modified Reid colposcopic index).
Related
Curated clinical cross-links plus same-class fallbacks.
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.