Container: Serum (Gold top)

Sample type: Serum

Test name: ELF a.k.a. Enhanced liver fibrosis test

Condition / Indication: Liver fibrosis marker for investigation of NAFLD.

Special precautions & notes: Only available to primary care. Only assayed if abnormal FIB-4 result.

Reference range: >9.5: Liver referral, ensure NILS and liver ultrasound performed.
<9.5: Lifestyle modification including regular screening for NAFLD risk factors. Repeat FIB-4 in 3 years.

Container: Serum (Gold top)

Alternative container: Li heparin (green top)

Ideal volume (mL): 5 mL

Referred outside NBT for analysis? Yes

Discipline: Clinical Biochemistry

Turnaround time: 10 days


Referral location: Specialist Biochemistry, Department of Laboratory Medicine, Mail Point 6 Level D, South Block General Hospital, Tremona Road Southampton SO16 6YD

Information for Laboratories referring samples for analysis at NBT:

Ensure FIB-4 is calculated before requesting ELF.