Table 1

 Laboratory investigations

InvestigationValueNormal range
Oxygen tension (kPa)8.511–14
pH7.497.35–7.45
Haemoglobin (g/l)94120–160
Creatine kinase (IU/l)22.540–180
Albumin (g/l)2536–44
dsDNA (IU/l)>200<35
C3 (g/l)0.290.75–1.65
Erythrocyte sedimentation rate (mm/hour)47<20
C-reactive protein (mg/l)6.2<10