Proposed Tiered HbA1c Threshold Framework for FUE Hair Transplantation
| HbA1c Range | Risk Category | Recommendation | Conditions and Caveats |
|---|---|---|---|
| < 7.0% | Low risk | Proceed | Standard preoperative screening; routine counseling; no additional glycemic optimization required |
| 7.0%–7.9% | Moderate risk | Proceed with optimization | Coordinate with primary care or endocrinology; optimize glycemic control where feasible; day-of-surgery glucose check recommended (target < 180mg/dL); counsel patient explicitly on elevated risk of infection and delayed graft healing |
| 8.0%–8.4% | Elevated risk | Proceed with caution; shared decision-making required | Documented shared decision-making discussion mandatory, endocrinology clearance advised; consider limiting graft count in initial session; enhanced postoperative surveillance; defer if optimization is achievable without significant delay |
| 8.5%–9.4% | High risk | Defer; optimize first | Aligned with CPOC 2023 deferral threshold; refer to endocrinology or PCP for glycemic optimization before scheduling; reassess at 3 months; document clinical rationale if proceeding despite this level |
| ≥ 9.5% | Very high risk/relative contraindication | Do not proceed electively | Potentially significant risk of graft failure, infection, and impaired scalp healing; urgent endocrinology referral; reconsider candidacy only after sustained HbA1c improvement below 8.5% on two consecutive measurements ≥ 3 months apart |
* Day-of-surgery capillary blood glucose should be measured for all diabetic patients, with a target < 180mg/dL (10mmol/L) before proceeding. Procedures should be scheduled early in the day to minimize fasting-related glycemic variability.