Non-invasive Alternatives
FibroTest (FibroSure in the USA) and FibroMax are non-invasive tests using a blood sample and an algorithm. The test results correspond to stages F0-F4 and grades A0-A3 of the METAVIR scoring system. In 2007 FibroTest was validated by French Health Authorities as a first-line diagnosis of liver injury before biopsy. It was recommended to be a better predictor than biopsy staging for hepatitis C complications and death.
FibroScan is a type of ultrasound machine that uses transient elastography to measure liver stiffness. Its diagnostic performance for fibrosis is similar to that of methods based on serologic markers. Combined use of Fibroscan and Fibrotest could avoid a liver biopsy in most patients with chronic hepatitis C. Other ultrasonic techniques used to characterize liver stiffness include Acoustic Radiation Force Impulse (ARFI) Imaging.
APRI is a quick serum biomarker for fibrosis assessment from Italy. This simple index is made up of routine laboratory tests. The test has not been validated by Health Authorities. 50% of the results are unclassifiable. APRI may be useful for excluding significant fibrosis in hepatitis C.
Hepascore is an Australian blood test combining the following clinical and laboratory variables: age, gender, bilirubin, GGT, hyaluronic acid, alpha 2 macroglobin to create a score. The test has very few validations.
Read more about this topic: Liver Biopsy
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