Laboratory Medicine
Test Directory / Crossmatch
Crossmatch
EDTA X 1
| Test | Crossmatch |
|---|---|
| Common Abbreviations | |
| Specimen type | Blood |
| Sample type | Blood |
| Tube type | EDTA X 1 |
| Minimum volume * | 4.9 ml |
| Special precautions | Patients spun samples are stored at 4-8 °C for 7 days and may be suitable for subsequent crossmatch requests. |
| Stability** | up to 7 days |
| Turnaround times | 45 mins (URGENT) / Within 4 hours (ROUTINE) |
| Laboratory | York and Scarborough |
| Reference interval | |
| Limitations | Blood [red cells] is provided in accordance with the agreed surgical blood order schedule. Exceptions to the schedule must be discussed directly with the laboratory staff. The detection of atypical antibodies and incompatibilities may cause unexpected and inevitable delays. Un-crossmatched blood may be issued on clinical demand only. Blood can now be issued electronically provided: Two electronic groups exist on the database (one historical and one for the current situation) The patient has no atypical antibodies present. Electronic issue (EI) enables blood to be available for the patient within 20 minutes rather than the serological issue of 45 minutes. The transfusion department will undertake the decision to EI. Haemolysis and lipaemia may affect results |
| * | * For paediatric patients, smaller volumes (approximately 1 ml) are acceptable please contact the laboratory for further advice if necessary. |
| ** | ** Largely dependent on patients serological status and recent transfusion history |
