MLN and Fabry disease: The combination of 15 metabolics could diagnose spleen deficiency-FD, with the AUC of 0.9943, 95% CI 0.9854–1.0000), and the combination of 15 metabolics and motilin could diagnose spleen deficiency-FD, with the AUC of 0.9615, 95% CI 0.9264–9967).