| (Haematology) |
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| Investigation | : | Clotting Screen (PT & APTT) | ||||||||||
| Specimen type | : | Plasma | ||||||||||
| Spec container | : | Citrate | ||||||||||
| Volume required | : | 3.5 ml | ||||||||||
| Turnaround | : | <4 hours | ||||||||||
Profile of Prothrombin Time (PT) and Activated Partial Thromboplastin Time (APTT)
Sample Requirements
The sample must be received within the laboratory within 4 hours of collection. If the sample cannot reach the laboratory within 4 hours the sample must be centrifuged (3000g for 10 minutes) and separated and frozen
See the Management of High INR policy and Advice on Management of Bleeding with New Anticoagulants.