| Name | Heparin Therapy | |
| Tube Type | Blue (Sodium Citrate) | |
| Reporting Units | u/ml | |
| Reference Range | APTT: 25 – 36 s APTTR: 1.05 -2.5 FXa 0.35 – 0.7 u/ml | |
| Availability | NDDH (24/7) | |
| Target turnaround time | 2 hours | |
| Special requirements & notes | For peak a sample should be taken 2-4 hrs after dose given | |
| Patient preparation | N/A | |
| Volume required | 1 tube (2.7ml) must be full | |
| If delayed transport to lab, store: | In refrigerator 2 – 8oC | |
| Factors affecting result interpretation | Clotted sample, underfilled samples and haemolysis | |
| Time limit for add on test | 2 hours | |
| Pathology discipline | Haematology | |
| ‘Lab Tests Online’ link | N/A | |
Heparin Therapy
Last updated: May 27, 2020