Background: The normal range for Aspartate and Alanine Aminotransferases (AST and ALT) levels (<40 IU/L) were set in 1950s. Recent data from certain countries suggest lower levels of AST and ALT. Aim of the study was to redefine the normal values of aminotransferases in healthy Indian adults.
Methodology: In a cross sectional prospective study, 1002 blood donors were evaluated to isolate a healthy cohort. Four and 9 subjects positive for HBsAg and anti-Hepatitis C Virus (HCV) respectively and three females were excluded. 986 male subjects were evaluated for levels of serum aminotransferases.
Results: Of total 986 subjects (Group I), 543 (55.1%) had fatty liver on ultrasound [15 (1.5%) alcoholic fatty liver and 528 (53.5%) Nonalcoholic Fatty Liver Disease (NAFLD)]. Median AST and ALT in total group (Group I) were 27.69 (Interquartile Range (IQR) 22.33-37.04) and 34.19 IU/L (IQR 23.12-54.87) and in NAFLD (Group II) were 35.67 (IQR -27.49-47.43) and 50.36 (IQR 37.70-76.58) IU/L. Of remaining 443 subjects without fatty liver, 288 had one or more components of metabolic syndrome. Out of 155 patients with no fatty liver and no component of metabolic syndrome (Group III), 103 subjects had normal Body Mass Index (BMI) and normal cholesterol and Low Density Lipoprotein (LDL) (Group III). Median AST and ALT in Group III were 22.56 (IQR 20.23-26.91) and 21.36 (IQR 17.49-27.21) U/L respectively with a 95th percentile of 34.28 and 36.57 U/L for AST and ALT, respectively.
Conclusion: Levels of AST and ALT in healthy men are lower than the conventional values in India.
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| http://dx.doi.org/10.1016/j.jceh.2018.06.003 | DOI Listing |
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