PTH and Sepsis: Moreover, sepsis mice had increased blood PTH levels (Fig. 3f and Additional file 1: Table S3, 69.8 ± 7.6 vs. 25.7 ± 1.1 pg/mL, p < 0.01), which was in line with increased blood levels of 3′,5′-cyclic adenosine monophosphate (cAMP) (Fig. 3g, and Additional file 1: Table S3.