The present study is a retrospective cross-sectional study that assesses the prevalence of screen positivity (S+) for undiagnosed HF among T2DM people (with normal electrocardiogram (ECG) and no history of heart disease) attending the OPD at a tertiary care center in India using N-terminal pro-B-type natriuretic peptide (NT-proBNP). Here, NPPB is linked to hydrops fetalis.