Home
HelpTest Code ELF Enhanced Liver Fibrosis (ELF), Serum
Specimen Required
Patient Preparation: For 12 hours before specimen collection, patient should not take multivitamins or dietary supplements (eg, hair, skin, and nail supplements) containing biotin (vitamin B7).
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Serum gel
Acceptable: Red top
Submission Container/Tube: Plastic vial
Specimen Volume: 1 mL Serum
Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial. Specimens that have not been aliquoted will be rejected.
Specimen Type
SerumSpecimen Minimum Volume
Serum: 0.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Refrigerated (preferred) | 7 days |
| Frozen | 365 days | |
| Ambient | 48 hours |
Reject Due To
| Gross hemolysis | Reject |
| Gross lipemia | OK |
| Gross icterus | OK |
Reference Values
|
ELF score |
Risk of disease progression |
|
≥9.20 |
Diagnostic cut-off for clinically significant fibrosis (fibrosis stage 2 or greater) |
|
≥11.30 |
Prognostic cut-off for higher risk of progression to liver-related clinical events |
Day(s) Performed
Monday through Friday
Report Available
Same day/1 to 3 daysSpecimen Retention Time
7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
81517