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Liver Fibrosis, Fibrosis-4 (FIB-4) Index Panel

Message

***COLLECT MONDAY THRU THURSDAY ONLY***

DUE TO STABILITY, SPECIMEN HAS TO SHIP TO SJC OVERNIGHT DIRECT FROM ML USING THE SHORT STABILITY BOX. 


Test Code
30555


Alias/See Also
FIB-4
FIB4


Includes

  • Aspartate Aminotransferase (AST)

  • Alanine Aminotransferase (ALT)

  • Platelet Count

  • FIB 4 Index




Preferred Specimen
1 mL serum collected in a serum separator tube (SST) and whole blood full EDTA (lavender-top) tube


Minimum Volume
0.5 mL serum and 1 mL EDTA whole blood


Transport Container
Serum separator tube (SST) and EDTA (lavender-top) tube


Transport Temperature

  • Serum: Refrigerated

    Whole blood: Room temperature




Specimen Stability

  • Serum

  • Room temperature: 72 hours

  • Refrigerated: 5 days

  • Frozen: Unacceptable





  • Whole blood

  • Room temperature: 48 hours





Methodology
Spectrophotometry (SP) • Electronic Sizing and Counting/Cytometry/Microscopy

Clinical Significance
Liver Fibrosis, Fibrosis-4 (FIB-4) Index Panel - 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).



Last Updated: May 1, 2026


The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.