Factor 8 Inhibitor Reflex Panel
General Information
Lab Name
Factor 8 Inhibitor Reflex Panel
Lab Code
F8INHR
Epic Name
Factor 8 Inhibitor Reflex Panel
Description
Laboratory will perform PTT-based Factor VIII activity (F8) and reflexively add Chromogenic (2-stage) Factor 8 Inhibitor Assay (F8INH) if F8 activity is below reference range.
Outside clients should fill and submit Coagulation Patient Clinical History Form: Coagulation Patient Clinical History Form
Synonyms
F8 inhibitor, Factor VIII Inhibitor, FVIII inhibitor
Components
| Code | Name |
|---|---|
| F8 | Factor VIII Activity |
| FIRS | Factor Inhibitor Reflex Status |
Interpretation
Reference Range
See individual components
Ref. Range Notes
See Individual Test for Reference Ranges
Ordering & Collection
Specimen Type
Collection
3 or 5 mL BLUE TOP (Citrate) tube
Forms & Requisitions
Outside clients should fill and submit Coagulation Patient Clinical History Form: Coagulation Patient Clinical History Form
Handling Instructions
Specimen must be processed by Lab within 4 hours of collection.
Quantity
requested: Entire Sample
minimum: 1.5 ml plasma
Processing
UW-MT Instructions: Take specimen to UW-MT Coag lab for processing. Coag Tech will freeze plasma sample for transport to HMC Coag.
HMC Instructions: Take Specimen to HMC Cocag Lab for processing.
Outside Laboratory: Centrifuge sample for 10 minutes, remove plasma and re-spin plasma for another 10 minutes. Decant and freeze plasma (minimum 1.5 mL) at -20° C to -80°C. Send frozen on dry ice.
Performance
LIS Dept Code
Coagulation (COAG)
Performing Location(s)
| HMC |
Coagulation
206-520-4600 325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420 |
|---|
Frequency
Run Monday-Friday. Reported by end of day.
Available STAT?
Yes, Monday-Friday 8am-3pm. For other times, contact Lab Medicine resident for approval. Please notify Special Coag Lab on Friday (HMC 206-744-2621, UWMC 206-598-6242) if sending a stat Factor VIII on the weekend.