Targeted Dried Blood Spot Acylcarnitine and Amino Acid Profiling Reveals a Candidate Metabolic Signature in Pediatric Heart Failure: A Cross-Sectional Case–Control Study
This cross-sectional case–control study utilized targeted dried blood spot metabolomics to identify a candidate metabolic signature in pediatric heart failure characterized by significantly decreased levels of specific acylcarnitines and amino acids, suggesting a myocardial shift away from fatty-acid oxidation and highlighting the potential of a low-cost, non-invasive panel for future diagnostic validation.