Comprehensive Metabolic Panel with Fibrosis-4 (FIB‑4) Index
Use
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 (stages F3–F4). The comprehensive metabolic panel includes routine chemistry analytes to support this calculation.
Special Instructions
Not provided.
Limitations
Not provided.
Methodology
Other
Biomarkers
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
1 mL (0.5 mL minimum) serum
Minimum Volume
0.5 mL
Container
serum separator tube
Patient Preparation
Fasting specimen is preferred
Storage Instructions
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.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |