In Critically Ill Patients, Serum Procalcitonin Is More Useful in Differentiating between Sepsis and SIRS than CRP, Il-6, or LBP

Table 2

The highest levels of CRP, PCT, IL-6, and LBP in the first 24 hours of ICU treatment.

	All	Sepsis	SIRS	𝑃^∗∗
CRP* (μg/mL)	117 (56–194)	179 (88–297)	80 (52–152)	<.001
PCT* (ng/mL)	2.2 (0.3–20.3)	24.3 (6.6–57.2)	0.5 (0.2–1.1)	<.001
IL-6* (pg/mL)	153 (41–750)	1463 (243–12951)	54 (25–149)	<.001
LBP* (μg/mL)	19.1 (12.6–31.7)	30.9 (14.7–41.5)	16.3 (10.8–22.2)	.001

*Median, interquartile range.
**Mann Whitney 𝑈 test for difference between sepsis and SIRS.