Procalcitonin as a Biomarker for a Bacterial Infection on Hospital Admission: A Critical Appraisal in a Cohort of Travellers with Fever after a Stay in (Sub)tropics

Table 3

Descriptive statistics of procalcitonin (PCT) as an admission biomarker for bacteremia in 41 travellers who had a confirmed bacterial cause of fever and a blood-culture done on admission. Data are given as proportion [95% confidence interval].

PCT test	Cutoff 0.5 ng /mL	Cutoff 2.0 ng /mL	Cutoff 10 ng /mL
Sensitivity	0.65[0.39-0.85]	0.18[0.05-0.44]	0.06[0.00-0.31]
Specificity	0.71[0.49-0.87]	0.92[0.72-0.99]	1.00[0.83−1.00]
Positive predictive value	0.61[0.36-0.82]	0.60[0.17-0.93]	1.00[0.05−1.00]
Negative predictive value	0.74[0.51-0.89]	0.61[0.44-0.76]	0.60[0.43-0.75]