Visit https://www.peervoice.com/EJM860 to view the entire programme with slides. After completing “Simplifying Screening for Immunodeficiencies: A Practical Strategy Using Calculated Serum Globulin”, participants will be able to: Recognise the impact of delayed diagnosis of antibody deficiency on morbidity and mortality and the need for widespread education and effective screening for primary immunodeficiency (PID) and secondary immunodeficiency (SID); Distinguish the clinical manifestations that would alert the need to screen for PID and how calculated globulin screening can reduce diagnostic delay; Establish how to implement calculated globulin screening for patients with suspected antibody deficiencies.