| (Haematology) |
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| Investigation | : | Activated Partial Thromboplastin Time Ratio (APTR) | ||||||||||
| Spec container | : | Citrate | ||||||||||
| Volume required | : | 3.5 ml | ||||||||||
| Reference range | : | 1.8 - 3.3 | ||||||||||
| Turnaround | : | <4 hours | ||||||||||
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