Results of initial investigations of 53-year-old patient with a suspected drug overdose
| Test | Result | Normal range |
|---|---|---|
| Arterial blood gas | ||
| pH | 7.12 | 7.35–7.45 |
| pCO2 (mm Hg) | 42 | 35–45 |
| pO2 (mm Hg) | 275 | 80–100 |
| Bicarbonate (mmol/L) | 13 | 23–28 |
| Sodium (mmol/L) | 140 | 135–145 |
| Potassium (mmol/L) | 2.7 | 3.2–5.0 |
| Chloride (mmol/L) | 108 | 100–110 |
| Creatinine (μmol/L) | 164 | 50–98 |
| Albumin (g/L) | 32 | 38–50 |
| Lactate (mmol/L) | 10.6 | 0.5–2.0 |
| Serum ketones | Negative | Negative |
| Serum ethanol (mmol/L) | < 1 | < 1 |
| Random glucose (mmol/L) | 13 | 3.8–7.0 |
| Urea (mmol/L) | 7.2 | 3.0–7.0 |
| Serum osmolality (mmol/kg) | 357 | 275–295 |
| Acetaminophen (μmol/L) | 903 | 65–130 (therapeutic level) |
| Aspartate aminotransferase (U/L) | 17 | 5–34 |
| Alanine aminotransferase (U/L) | 15 | 7–40 |
| Alkaline phosphatase (U/L) | 58 | 40–150 |
| Bilirubin (μmol/L) | < 3 | ≤ 22 |
| International normalized ratio | 1.1 | 0.9–1.2 |
| Anion gap (mmol/L)* | 19 | 5–11 |
| Osmole gap (mOsm/kg)† | 57 | < 10 |