You will notice that some operations require a definite amount of blood to be cross-matched pre-operatively, whereas others have been classified on a group and hold basis. Blood sent on a group and hold basis will be reserved by the laboratory and on notification from theater that blood is required, cross-matched blood will be available in 30 minutes.
Blood samples can be stored for cross-matching for up to 2 weeks
If in doubt about whether blood is needed or not, and/or how much ASK
| Procedure | Units |
| Cholecystectomy | G&H |
| Haemorrhoidectomy | G&H |
| Splenectomy | G&H |
| Exploratory Laparotomy | G&H |
| Fundoplication | G&H |
| Thyroidectomy | G&H |
| Colostomy closure/revision | G&H |
| Vagotomy/pyloroplasty | G&H |
| Mastectomy | G&H |
| ERCP | G&H |
| Parathyroidectomy | G&H |
| Carotid endarterectomy | G&H |
| Angiogram/Angioplasty | G&H |
| Gastrectomy | 2 units |
| Total colectomy | 2 units |
| Partial colectomy | 2 units |
| Esophagectomy | 4 units |
| AP resection | 4 units |
| Pancreatic resection | 4 units |
| Liver resection | 6 units |
| Elective/Emergency AAA | 6/10 units |
| Lower limb bypass | 2 units |
| Vascular re-operation of limbs | 4 units |
| False aneurysm of groin | 4 units |