Investigations

Blood for Complete picture

Blood culture (should be taken before starting any antibiotic)

Chest X-ray (if signs of respiratory distress present)

C-reactive protein (if available)

Coagulation profile (if DIC suspected)

Swab from any site of inflammation

Throat and ear swab (if EOS suspected)

Urine microscopy and culture (if indicated)

Additional routine tests, indicated by the clinical situation/availability

Lumbar puncture (CSF RE & Culture) - must be done in suspected LOS

Culture and Gram stain of gastric aspirate

Culture and Gram stain of maternal high vaginal swab