Chromogenic FVIII assay
Determination of FVIII using a chromogenic method
| Tube | 05 (CP) - Citrate |
|---|---|
| ID | 12736 |
| Availability | Weekdays |
| Additional Information | FVIII activity assays (FVIII:C) are performed to diagnose hemophilia A and to monitor FVIII replacement therapy. FVIII:C assays are typically 1-stage clotting assays. However, there is a subset of mild hemophilia A patients who have shown discrepantly low results when measured with the 2-stage (chromogenic) assay, indicating that testing patients with a mild bleeding history with both a 1- and 2-stage assay would aid in diagnosis. |
| Send to | Specialist Coagulation Chancellor / Lincoln Wing Link Corridor Pathology Block 32 St James University Hospital Beckett Street Leeds LS9 7TF |
| Contact | https://www.leedsth.nhs.uk/a-z-of-services/pathology-2/specialist-laboratory-medicine-slm/specialist-coagulation/?stage=Stage |
| Collection Con | All citrate tubes filled to line please - 2 citrate samples required. Samples must be processed within 6 hours of being taken. |
| Sample REQ | Blood |
| Ref. Range (Male) | 50-100 |
| Ref. Range (Female) | 50-100 |
| Ref. Range (Paed) | 50-100 |
| Ref. Range Notes | Currently not a diagnostic test |
| Units | iu/dL |
| IP Acute TAT | Contact laboratory |
| IP Routine TAT | 14 days |
| GP Acute TAT | Contact laboratory |
| GP Routine TAT | 14 days |
| Telepath | F8CH1J |
| ICE Codes | LF8CH |
