CALCA and Sepsis: Considering the maximum sensitivity andspecificity of the assay, PCT values lower than 0.5ng/mL are suggestive ofinflammation without infectious etiology, and values higher than 2.0ng/mL aresuggestive of sepsis.(25)However, other studies in adults(26) have used values different from these, considering PCTvalues higher than 0.25 to 0.5ng/mL as reflecting probable bacterial infectionand indicative of required antibiotic therapy.