| 标本 | n (%) |
| 中段尿 | 85 (46.70%) |
| 分泌物 | 57 (31.32%) |
| 脓液 | 10 (5.49%) |
| 腹水 | 7 (3.85%) |
| 全血 | 6 (3.30%) |
| 胆汁 | 4 (2.20%) |
| 深静脉置管 | 4 (2.20%) |
| 创面渗液 | 2 (1.10%) |
| 胸水 | 2 (1.10%) |
| 其他 | 5 (2.75%) |