| Test | Urea |
| Department | Clinical Biochemistry, Rotherham NHS Foundation Trust |
| Comment | Part of U+E test |
| Sample type | Blood (also measured in urine) |
| Sample tube | Serum (brown top) or lithium heparin plasma (orange top) |
| Collection conditions | No special requirements |
| Minimum volume | 0.5 ml blood (100ul of serum absolute minimum) |
| Reference ranges (adult) |
2.5 - 7.8 mmol/L |
| Reference ranges (paediatric) |
Neonate = 0.8 - 5.5 mmol/L Infant = 1.0 - 5.5 mmmol/L 1-16 yrs = 2.5 - 6.5 mmol/L |
| Author | Dr Robert Lord (Consultant) |
| Date | 07.04.11 |
| Interpretation | http://www.clinbiochem.info/laburea2.1.pdf |
