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Factor VII Assay

Centralized Core Laboratory - Mayo Clinic Laboratories : Send Out

Test ID :
FVIIA
Test Workstation :
MAYO
Specimen Type:
Blood
Tube Type:
Lt. Blue top (sodium citrate) tube
Collection Volume:
2.7 mL (minimum 1.8mL) - properly filled tube. Must use appropriate sodium citrate tube based on volume of blood drawn(1.8mL or 2.7mL)
Cause for Rejection:
Grossly hemolyzed, grossly lipemic, or grossly icteric specimens. Patient must not be receiving Coumadin or heparin therapy.
Storage:
Spin and freeze immediately. Frozen plasma.
Availability:
Sent to reference lab
Methodology:
Optical Clot-Based
Special Instructions:
Draw one lt. blue top tube per test. For Outpatients, test should only be drawn in outpatient locations within a Hospital (Akron or Beeghly).
Lab/Phone:
330-543-8418
TAT:
1-3 days
Additional Info:
    Reference range:
    Adults: 65-180%
Normal, full-term newborn infants or healthy premature infants may have decreased levels (> or =20%) which increase within the first postnatal week but may not reach adult levels for > or =180 days postnatal.*
CPT Code:
85230
Synonyms:
Coagulation Factor VII Activity Assay, Plasma Factor VII Activity Assay
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