PCOS guidelines: 2023 refines 2018, it does not reverse it

The 2023 PCOS guideline builds on the 2018 guidance rather than overturning it. Its core remains the same, but the diagnostic pathway is clearer: in adults, AMH can be used as an alternative to ultrasound. That change is limited to adults. The evidence base has improved, but remains generally low to moderate quality, so the guidelines still call for much more research.