Liver Enzyme Unit Converter
Convert liver function enzyme tests (ALT, AST, Alkaline Phosphatase, and GGT) between conventional units (Units per Liter, U/L) and SI units (Microkatals per Liter, $\mu\text{kat/L}$).
Reference Ranges
What Is a Liver Enzyme Unit Converter?
A Liver Enzyme Unit Converter is a non-invasive hepatic biomarker reference tool designed to evaluate ratios and indices of liver health. By analyzing routine biochemical panel inputs such as AST, ALT, platelets, or bilirubin, it calculates validated clinical scores (such as the De Ritis ratio or FIB-4 index) to provide educational insight into liver health and warrant follow-up consultation with a physician.
How to Use This Calculator
- Select your input enzyme unit (U/L or $\mu\text{kat/L}$).
- Type your enzyme test value (e.g., 45).
- View instant two-way converted values across transaminases and standard laboratory reference ranges.
How This Calculator Works
One International Unit (U) equals $1\text{ }\mu\text{mol of substrate catalyzed per minute}$. One Katal (kat) equals $1\text{ mol of substrate catalyzed per second}$. The universal conversion is: $\mu\text{kat/L} = \text{U/L} \times 0.01667$ and $\text{U/L} = \mu\text{kat/L} \times 60.0$.
Understanding Your Results
Conventional units (U/L) dominate in North American and Asian healthcare facilities, whereas SI catalytic units ($\mu\text{kat/L}$) are standard across Nordic nations, the Netherlands, and scientific biochemistry literature.
Frequently Asked Questions
What enzymes does this converter support?
This mathematical conversion applies universally to all catalytic enzyme assays: Alanine Aminotransferase (ALT), Aspartate Aminotransferase (AST), Alkaline Phosphatase (ALP), and Gamma-Glutamyl Transferase (GGT).
What is considered a normal ALT range?
A normal ALT in healthy adults without liver disease is generally under 33 U/L ($0.55\text{ }\mu\text{kat/L}$) for men and under 25 U/L ($0.42\text{ }\mu\text{kat/L}$) for women, according to updated AASLD guidelines.
Does GGT help differentiate liver from bone disease?
Yes. Both liver and bone diseases can elevate Alkaline Phosphatase (ALP). An elevated GGT confirms that an elevated ALP originates from the hepatobiliary system rather than bone remodeling.
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Important Limitations & Medical Disclaimer
Notice: Enzyme unit conversions are mathematical references. Reference intervals differ slightly across laboratory assay temperatures (30°C vs 37°C); verify your numbers against your clinical laboratory report.