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Clinical blood tests, their normal reference ranges and urgent action levels
| Blood test | Normal reference range | Urgent action level |
| Haemoglobin (male), g/L | 130–170 | <100 or >200 |
| Haemoglobin (female), g/L | 115–155 | <100 or >200 |
| Platelets, ×109/L | 150–400 | <100 or >1000 |
| Vitamin B12, pg/mL | 191–900 | <100 |
| Urea, mmol/L | 1.7–8.3 | >20 |
| Creatinine (male), μmol/L | 66–112 | >200 |
| Creatinine (female), μmol/L | 49–92 | >200 |
| Glucose, mmol/L | 3.5–10 | >20 |
| Thyroid stimulating hormone, mIU/L | 0.27–5.5 | <0.1 or >10 |
