| Biochemical marker | Instrument | Normal values |
| Lactate | Radiometer Copenhagen Int ABL 700 system | 70 - 110 mg% |
| Glucose | Radiometer Copenhagen Int ABL 700 system | 0.6 - 2.2 mmol/l |
| Cortisol | Cobas e411, Hitachi | 6.2 - 19.4 ug/dl |