Care providers often use the reporting laboratory’s ALT upper reference limit (upper limit of normal, ULN) or a multiple thereof (e.g., 1.5 × ULN) to trigger further evaluation. Such evaluation can be expensive and invasive, yet ignoring aminotransferase elevations can allow life-threatening liver disease to progress if not recognized and ...

ULN in Medical commonly refers to Upper Limit of Normal, a statistical term used to describe the maximum value considered normal for a specific laboratory test result or measurement. This term is crucial in interpreting medical test results and determining if a patient's values fall within a …

Alanine aminotransferase (ALT) is an important test for liver disease, yet there is no generally accepted upper limit of normal (ULN) in the United States. Furthermore, the ability of ALT to differentiate persons with and without liver disease is ...

2025年1月25日 · The upper limit of normal (ULN) is the reference range for these enzymes, which can be elevated due to various diseases, medications, or conditions. Normal AST is reported between 10 to 40 units per liter, while ALT is between 7 to 56 units per liter.

ULN在医学上的英文全称为upper limit of normal，中文全称为正常上限值。 在实验室检查、影像学检查、病理检查等各个医学方面，其数值都有其正常上、下限值，该数值有助于判断患者是否在正常值范围内，是否患有某种疾病，作为诊断依据

2020年6月11日 · ALT and AST upper limit of normal (ULN) vary depending on lab, in general: ≤ 40 U/L. Except for severe acute liver injury, studies have shown inconsistent correlation between the severity of liver injury in histology and serum levels of aminotransferases.

2013年6月25日 · Several studies have recently questioned whether previously established values defining the upper limit of normal (ULN) for ALT are sufficiently sensitive, and have suggested that the ULN should be revised. This review highlights the evidence for a redefinition of ALT ULN, and also discusses the current skepticism. 2.

ULN stands for Upper Limits of Normal, which is a term used to describe anything that exceeds the highest possible value established as normal for a particular laboratory test.

normal (ULN) in cirrhosis. - INR, PT, PTT and aPTT times may deliberately be kept longer, at 1.5 to 2.5 times the normal value, for patients on anticoagulant therapy or patients with artificial heart valves. - Other factors that can prolong PT include vitamin K deficiency (an …

ULN stands for Upper Limit of Normal, which is a term used in medical contexts to indicate the maximum value within a normal range for laboratory test results. It is a crucial reference point for assessing whether a patient’s test results fall within standard parameters.