There is no need to check the liver fiber 4 after the liver fiber 5 test. Because the Liver Fibre Pentathlon includes the Liver Fibre IV, there is no need to do the Liver Fibre IV after the Pentathlon, and the results of the Pentathlon can more accurately determine the specific changes in the liver from which liver fibrosis can be ruled out. Liver fiber five tests mainly include hyaluronan, type 3 pre-collagen, type 4 collagen, laminin, glycolic acid, according to the results of these tests can determine the damage to the cells in the liver, to understand the possibility of repair of the fibrous tissues in the liver, and to further analyze the lesions of liver fibrosis. If it is clear that the liver tissue is damaged and liver fibrosis exists through the five tests of liver fiber, treatment should be started as early as possible to avoid gradual aggravation of the condition causing cirrhosis, liver cancer and so on. During this period, liver function should be checked regularly, and if liver function is impaired, appropriate treatment should also be carried out.