Factor VII Activity
General Information
Lab Name
Factor VII Activity
Lab Code
F7
Epic Name
Factor VII Activity
Description
Factor 7 activity is used for diagnosing congenital or acquired factor VII deficiency. Acquired deficiencies include liver disease, oral anticoagulant therapy (warfarin) or vitamin K deficiency.
Outside clients should fill and submit Coagulation Patient Clinical History Form: Coagulation Patient Clinical History Form
Synonyms
Factor 7, Factor VII, FVII
Interpretation
Method
Stago STA Clot-Base Assay
Reference Range
Units: %
| Female | Male | ||
|---|---|---|---|
| Age | Range | Age | Range |
| 0-29d | 35-150 | 0-29d | 35-150 |
| 1m-2m | 42-150 | 1m-2m | 42-150 |
| 3m-5m | 39-150 | 3m-5m | 39-150 |
| 6m- | 50-150 | 6m- | 50-150 |
Effective date: 07/01/2004
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
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
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.
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?
No
Billing & Coding
CPT codes
85230
LOINC
Interfaced Order Code
UOW1286
Interfaced Result Code
UOW1286