Table 1.

Causes of false-negative and false-positive ¹¹¹In leukocyte studies.

False Negative

Encapsulated nonpyogenic abscess

Vertebral osteomyelitis

Chronic low-grade infection

Parasitic, mycobacterial or fungal infections

Intrahepatic, perihepatic, or splenic infection

Hyperglycemia

Steroids

False Positive

Gastrointestinal bleeding

Pseudoaneurysm

Healing fracture

Soft tissue tumor

Surgical wounds, stomas, or catheter sites

Tumors

Accessory spleens