Additionally, there was no significant difference in copeptin levels between patients with and without acute kidney injury at copeptin T1 664 (IQR, 364–915) vs 453 (IQR, 312–777) pg/mL, p = 0.28; at copeptin T2 423 (IQR, 267–844) vs 436 (IQR, 289–709) pg/mL, p = 0.97); or at copeptin T3 589 (IQR, 308–1212) vs 496 (IQR, 301–727) pg/mL, p = 0.58. Here, AVP is linked to acute kidney injury.