Differences between hypertonic dehydration and salt overload. See text for further details
| Hypertonic dehydration | Salt overload | |
|---|---|---|
| FENa: fractional excretion of sodium. | ||
| Weight | ↓ | Normal or ↑ |
| History of diarrhoea | Present | Absent |
| Signs of dehydration | Present | Absent |
| Urea and creatinine | ↑ | Normal |
| Acidosis | Non-discriminatory | |
| Urine sodium concentration | Non-discriminatory | |
| Sodium excretion rate/FENa | Normal or ↓ | ↑ |