Markers of glycaemic variability before (pre-trek), during (trek) and after (post-trek) a trek to Everest Base Camp by a 42-year-old man with type 1 diabetes. Pre-trek and post-trek altitudes are at sea level
| Pre-trek | Trek | Post-trek | |
| Mean glucose (mmol/L) | 8.69 | 10.81 | 10.10 |
| SD | 2.90 | 3.45 | 2.98 |
| Coefficient of variation (%) | 33.4 | 31.9 | 29.5 |
| Low blood glucose index | 4.95 | 3.58 | 2.77 |
| GRADE hypo | 6.52 | 1.53 | 0.60 |
| Mean amplitude of glycaemic excursions | 7.25 | 7.75 | 6.17 |