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FibroTest, known as FibroSure in the US, is a biomarker test that uses the results of six blood serum tests to generate a score that is correlated with the degree of liver damage in people with a variety of liver diseases. FibroTest has the same prognostic value as a liver biopsy.
The test results correspond to stages F0-F4 and grades A0-A3 of the METAVIR scoring system. [20] 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. [21]
SSI is used for breast examination with a number of high-resolution linear transducers. [10] A large multi-center breast imaging study has demonstrated both reproducibility [ 11 ] and significant improvement in the classification [ 12 ] of breast lesions when shear wave elastography images are added to the interpretation of standard B-mode and ...
Reference ranges (reference intervals) for blood tests are sets of values used by a health professional to interpret a set of medical test results from blood samples. Reference ranges for blood tests are studied within the field of clinical chemistry (also known as "clinical biochemistry", "chemical pathology" or "pure blood chemistry"), the ...
In fact, post-test probability, as estimated from the likelihood ratio and pre-test probability, is generally more accurate than if estimated from the positive predictive value of the test, if the tested individual has a different pre-test probability than what is the prevalence of that condition in the population.
Transient elastography is recommended for the initial assessment of liver fibrosis and cirrhosis and helps to predict complications and prognosis, but the interpretation of results is carefully weighed in the presence of limiting factors such as steatosis, high BMI, low amount of hepatic fibrosis, narrow spaces between the ribs, and portal ...
The standard definition of a reference range for a particular measurement is defined as the interval between which 95% of values of a reference population fall into, in such a way that 2.5% of the time a value will be less than the lower limit of this interval, and 2.5% of the time it will be larger than the upper limit of this interval, whatever the distribution of these values.
A test score is a piece of information, usually a number, that conveys the performance of an examinee on a test. One formal definition is that it is "a summary of the evidence contained in an examinee's responses to the items of a test that are related to the construct or constructs being measured."