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Test Code


CPT Code(s)

82172, 82247, 82465, 82947, 82977, 83010, 83883, 84450, 84460, 84478

Patient Preparation

Patient should be fasting for at least 8 hours before sample collection.

Preferred Specimen(s)

3.2 mL serum, protected from light

Minimum Volume

2 mL

Collection Instructions

Separate serum from cells within 2 hours of collection. Freeze and ship frozen. Age, sex, height, and weight are required for this test.

Specimen Container

Plastic screw-cap vial, protected from light

Transport Temperature


Specimen Stability

Room temperature: Unacceptable
Refrigerated: 72 hours
Frozen: 7 days

Reject Criteria

Gross hemolysis • Gross lipemia • Improper labeling • Nonfasting specimen • Patient less than 14 years of age


Nephelometric • Immunoturbidimetric • Enzymatic • Hexokinase • Chemiluminescent • Colorimetric Diazo

Performing Laboratory

Laboratory Corporation of America
LabCorp Herndon
13900 Park Center Road
Herndon, VA 20171

Setup Schedule

Set up: Mon-Fri a.m.; Report available: 5-7 days

Reference Range(s)

See Laboratory Report

Clinical Significance

This test is a noninvasive assessment of liver status in patients with nonalcoholic fatty liver disease (NAFLD). Quantitative results of 10 biochemicals, in combination with age, gender, height, and weight, are analyzed using a computational algorithm to provide a quantitative surrogate marker (0.0-1.0) of liver fibrosis (Metavir F0-F4), hepatic steatosis (0.0-1.0, S0-S3), and nonalcoholic steatohepatitis (NASH) (0.0-0.75, N0-N2). The absence of steatosis (S < 0.38) precludes the diagnosis of NASH.

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided 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 payer being billed.

LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.

* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.