CALCA and Sepsis: The significance was that the increase in PCT levels was much higher than that associated with sepsis, and levels were increased regardless of liver enzyme levels (GPT, 16 IU/L in case 1 vs 1473 IU/L in case 2) and blood acetaminophen level (<5.0 μg/mL in case 1 vs 116.9 μg/mL in case 2).