The results also showed that Galectin-3 and Copeptin were not able to distinguish advanced HF from mild HF (Galectin-3: AUC = 0.57, 95%CI: 0.47–0.68, Copeptin: AUC = 0.48, 95% CI: 0.38–0.59). Here, AVP is linked to hydrops fetalis.