AUTHOR=Jansen Marleen E. , Klein Anne W. , Buitenhuis Erika C. , Rodenburg Wendy , Cornel Martina C. TITLE=Expanded Neonatal Bloodspot Screening Programmes: An Evaluation Framework to Discuss New Conditions With Stakeholders JOURNAL=Frontiers in Pediatrics VOLUME=Volume 9 - 2021 YEAR=2021 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2021.635353 DOI=10.3389/fped.2021.635353 ISSN=2296-2360 ABSTRACT= Neonatal bloodspot screening (NBS) programmes that screen for rare but serious conditions are expanding worldwide.  Fast developments for testing and treatment put pressure on implementation processes.  In 2015 the Netherlands embarked on an NBS expansion from seventeen to thirty-one conditions.  An evaluation framework was developed based on international NBS frameworks to gain insight in test properties, clinical findings, follow-up and implementation.  A stakeholder process took place with implications for the planning of the expanded NBS panel.  The evaluation framework progressed into a go / no go framework to start national screening, and is currently explored as basis for continuous evaluation of the NBS panel.  The framework and stakeholder process may serve as an example for other programmes.