| GI Pathology | Low Ferritin | Normal Ferritin | Low MCV | Normal MCV |
|---|---|---|---|---|
| Gastric/duodenal ulcer | 1 | 12 | 2 | 11 |
| Coeliac disease | 6 | 2 | 4 | 4 |
| Polyps/adenomas | 17 | 22 | 13 | 26 |
| Colitis/IBD | 3 | 6 | 2 | 7 |
| Angiodysplasia | 1 | 9 | 4 | 6 |
| Haemorrhoids | 3 | 0 | 2 | 1 |
| Upper GI malignancy | 3 | 7 | 4 | 6 |
| Colorectal malignancy | 6 | 10 | 7 | 9 |
| Total number | 40/84 | 68/181 | 38/96 | 70/169 |