Labs
WBC elevated in <45% of patients
ESR and CRP are almost consistently elevated
Sensitivity of ESR in pt with SEA risk factors ~100%
Blood cultures are indicated to identify the source organism (Staph in 2/3 of cases)
Sensitivity of ESR in pt with SEA risk factors ~100%
CSF
Gram stain typically negative
Cultures are positive in <25% of patients
Imaging
Strongly consider imaging the entire spine to assess for non-contiguous<unk> MRI with gadolinium is the diagnostic test of choice
CT with IV contrast may provide usual information regarding bony integrity and fluid collections while awaiting MRI
Epidural abscess 
Epidural Abscess 
Subdural empyema
Discitis
Vertebral osteomyelitis
Spine related
Epidural hemorrhage
Acute ligamentous injury