CALCA and cancer: Specifically, non-cancer patients had a significantly lower PCT level (median: 0.029 ng/ml) than non-febrile cancer patients (median: 0.099 ng/ml) (p<0.0001) and the latter had a significantly lower PCT level than febrile cancer patients without microbiological infection (median: 0.310 ng/ml) (p<0.0001).