Factor V Activity
General Information
- Lab Name
- Factor V Activity
- Lab Code
- F5
- Epic Name
- Factor V Activity (Not for thrombosis eval - see APCR)
- Description
This test is NOT for Factor V Leiden or F5DNA. Please see APCR (Factor V Leiden Protein Assay) or F5DNA (Factor V DNA Screen) for those respective tests.
Factor 5 activity is used for diagnosing rare congenital deficiencies of coagulation factor V, investigation of prolonged prothrombin time and evaluating acquired deficiencies associated with liver disease, intravascular coagulation and fibrinolysis.
- Synonyms
- Factor 5, Factor V
- Components
Interpretation
- Method
Stago STA Clottable Factor assay
- Reference Range
-
Units: %
Female Male Age Range Age Range 0- 50-150 0- 50-150 - Interferences and Limitations
Patients on bivalirudin (Angiomax), dabigatran (Pradaxa), argatroban (Novastan), rivaroxaban (Xarelto), apixaban (Eliquis), and edoxaban (Savaysa) may show prolonged clotting times. This may cause an under- estimation of the factor concentrations.
Ordering & Collection
- Specimen Type
- Blood
- 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
The Laboratory MUST process specimen, within 4 hrs of blood collection
- Quantity
- Requested: entire specimen
Processing
- Receiving Instructions
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 Coag lab for processing.
Outside Laboratory: Centrifuge for 10 minutes, remove plasma & re-spin plasma for another 10 minutes. Decant & Freeze plasma (minimum 1.0 mL) @ -20°C to -80°C. Send frozen on dry ice.
- Misc Sendout
Performance
- Lab Department
- Coagulation(COAG)
- Frequency
- Run Monday-Friday. Reported by end of day.
- Available STAT?
- No
- Performing Location(s)
-
HMC Coagulation
206-520-4600325 9th Ave, Rm # GWH-47, Seattle, WA 98104-2420
Billing & Coding
- CPT Codes
- 85220
- LOINC
- 3193-0
- Interfaced Order Code
- UOW1289
- Interfaced Result Code
- UOW1289