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Association between procalcitonin (PCT) results and all-cause mortality. Median PCT levels were significantly higher in patients who had died within 1 month of test order (0.64 ng/mL; 95% confidence interval [CI], 0.40-1.51 ng/mL) vs patients who were still alive (0.16 ng/mL; 95% CI, 0.11-0.22 ng/mL). Black bars in the violin plots represent the median. Dotted black lines represent the upper and lower quartiles. *P < .0001.
