Recommendation of antibiotic use based on procalcitonin result
| Procalcitonin <0.1 μg/L | Antibiotics strongly discouraged |
| Procalcitonin 0.1–0.24 μg/L | Antibiotics discouraged |
| Procalcitonin 0.25–0.49 μg/L | Antibiotics encouraged |
| Procalcitonin ≥0.5 μg/L | Antibiotics strongly encouraged |