Liver fibrosis score in Serum or Plasma Calculated by HepaScore 78894-3
LOINC Code
| LOINC code | 78894-3 | ||
|---|---|---|---|
| name | Liver fibrosis score in Serum or Plasma Calculated by HepaScore | ||
| description | This term was created for the HepaScore liver fibrosis test, which is a marker of liver fibrosis in patients with hepatitis C infection. The score ranges from 0 to 1 and is calculated based on four lab tests (GGT, bilirubin, alpha-2-macroglobulin, and hyaluronic acid) plus the patient's age and gender. The HepaScore is reported with a central cut-off of 0.50, with a value ≥ 0.50 indicating that significant liver fibrosis is present (positive predictive value 88%) and a value < 0.50 indicating that advanced fibrosis is absent (negative predictive value 95%) for patients with hepatitis C infection. The HepaScore logistic regression model is as follows: y = exp[-4.185818 - (0.0249 x age) + (0.7464 x sex) + (1.0039 x α2-macroglobulin) + (0.0302 x hyaluronic acid) + (0.0691 x bilirubin) - (0.0012 x GGT)] with age provided in years, male sex = 1, female sex = 0, α2-macroglobulin in g/L, hyaluronate in μg/L, bilirubin in μmol/L, and GGT in U/L. The score itself is calculated as y/(1 +y). [PMID: 16055434] | ||
| status | ACTIVE | ||
Fully-Specified Name | |||
| component | Liver fibrosis score | ||
| property | Score | ||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||
| system | Ser/Plas Ser = Serum Plas = Plasma | ||
| scale | Qn = Quantitative: The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256 | ||
| method | Calculated.HepaScore | ||
Additional Names | |||
| short name | Liver fibr score SerPl Calc HepaScore | ||
Basic Attributes | |||
| class | CHEM | ||
| type | 1 Laboratory | ||
| order vs. observation | Both | ||
| formula (readable) | HepaScore = y/(1+y), where y = exp[-4.185818 - (0.0249 x age) + (0.7464 x sex) + (1.0039 x α2-macroglobulin) + (0.0302 x hyaluronic acid) + (0.0691 x bilirubin) - (0.0012 x GGT)] | ||
| example UCUM units | {score} The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org) | ||
| example unit | score | ||
Associated Observations | |||
LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations. | |||
Member of these Groups | |||
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Member of these Panels | |||
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History/Usage | |||
| first released | |||
| last updated | 2.54 | ||
| last change type | MIN - change to field other than name | ||
Related Names | |||
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Copyright © 2023 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2023, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.
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