| Examination | Mild hypovolemia | Moderate hypovolemia | Severe hypovolemia |
| Look at: | |||
| Mental status | Alert | Restless, irritable | Lethargic or unconscious |
| Eyes | Normal | Sunken | Very sunken and dry |
| Tears | Present | Absent | Absent |
| Mouth/tongue | Moist, slightly dry | Dry | Very dry |
| Thirst | Increased thirst | Thirsty, drinks eagerly | Drinks poorly or not able to drink |
| Feel: | |||
| Skin pinch | Goes back rapidly | Goes back slowly | Goes back very slowly (tenting) |
| Pulse | Normal | Rapid, weak | Very fast, weak or nonpalpable |
| Extent of volume loss | |||
| <5% of body weight | From 5 to 10% of body weight | >10% of body weight | |
| Estimated fluid deficit | |||
| <50 mL/kg | 50-100 mL/kg | >100 mL/kg | |
