• Full blood count and film |
• Erythrocyte sedimentation rate and C reactive protein |
• Blood culture |
• Antistreptolysin O titre and antiDNAse B |
• Nasal and throat swab bacterial and viral culture |
• Stool culture |
• Urea and electrolytes |
• Liver function tests |
• Clotting screen |
• Autoantibody screen |
• Viral titres for enterovirus, adenovirus, parvovirus, Epstein Barr virus, cytomegalovirus |
• Mycoplasma pneumoniae titres |
• Urine microscopy—dipsticking for proteinuria and haematuria |
• ECG/echocardiography/chest x ray |