Comprehensive Metabolic Panel with Fibrosis-4 (FIB-4) Index
Test Code
Clinical Significance
Comprehensive Metabolic Panel with Fibrosis-4 (FIB-4) Index - The FIB-4 index is a simple non-invasive approach using selected laboratory measures (AST, ALT, platelet count) in combination with patient age to assess if an individual is at higher risk for advanced liver fibrosis (F3-F4).
Test Resources
Test Summary
Cardiometabolic Disease Assessment (CMDA) PanelTest Summary
Liver Fibrosis, Fibrosis-4 (FIB-4) Index PanelTest Details
Platelet Count
FIB 4 Index
Methodology
Reference Range(s)
Preferred Specimen(s)
1 mL serum collected in a serum separator tube (SST) and one full tube whole blood collected in an EDTA (lavender-top) tube
Minimum Volume
0.5 mL serum • 1 mL EDTA whole blood or 0.5 mL microtainer-lavender
Collection Instructions
Whole blood: Maintain specimen at room temperature. Do not refrigerate. If multiple draw, collect lavender-top tube last. Traumatic venipuncture tap can introduce thromboplastin and trap white blood cells and platelets. Refrigeration can precipitate fibrin and trap white blood cells and platelets.
Transport Container
Serum separator tube (SST) and EDTA (lavender-top) tube
Transport Temperature
Room temperature
Specimen Stability
- Serum
- Room temperature: 72 hours
- Refrigerated: 72 hours
- Frozen: Unacceptable
- Whole blood
- Room temperature: 48 hours
Reject Criteria
See individual tests
Setup Schedule
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable
Whole blood
Room temperature: 48 hours