Liver Function Test

Liver function tests are a group of blood tests that provide information about how well the liver is working. They typically include enzymes that leak from liver cells when they are stressed or damaged (such as ALT and AST), markers of bile flow (such as ALP and GGT), and substances processed by the liver like bilirubin and albumin. According to Wikipedia’s article on liver function tests, these measurements are used worldwide to help evaluate liver injury, bile duct problems and synthetic function.

Doctors may order an LFT panel for many reasons: routine health checks, monitoring long-term medication, investigating fatigue, abdominal discomfort, jaundice (yellowing of the skin or eyes), abnormal imaging results or suspected viral hepatitis. On the printed lab report, however, LFT values are often listed as raw numbers and abbreviations. The LFT Analyzer is designed to help you interpret these values within typical reference ranges so you can better follow medical discussions and understand what each part of the panel means.

Most adult LFT panels include several core markers. The online analyzer explains each of them in simple, non-diagnostic language:

• ALT (Alanine aminotransferase) – an enzyme found mainly in liver cells; higher values are often associated with liver cell irritation or injury.
• AST (Aspartate aminotransferase) – another enzyme present in liver, muscle and other tissues; patterns of ALT and AST together can give clues about the source of elevation.
• ALP (Alkaline phosphatase) – commonly linked to bile ducts and bone; raised levels may appear in bile flow problems or increased bone turnover.
• GGT (Gamma-GT) – often used alongside ALP to help distinguish liver-related causes of elevation.
• Total and direct bilirubin – pigments formed when red blood cells are broken down; higher values may be seen when bile flow or processing is disturbed.
• Albumin and total protein – reflect the liver’s ability to synthesize proteins and the overall protein status of the body.

The LFT Analyzer groups these markers in a way that highlights patterns, such as primarily hepatocellular (enzyme-dominant) changes versus more cholestatic (bile-flow-related) patterns. It always presents this information in an educational, non-diagnostic format so that you can discuss the details with your physician.

For a broader metabolic context beyond LFTs, you may also want to review your CMP Analyzer results, which combine electrolytes, kidney markers and liver-related values in a single panel.

The Liver Function Test Analyzer accepts your lab values exactly as they appear on your report: ALT, AST, ALP, GGT, bilirubin, albumin and other optional parameters included by your laboratory. After you submit the numbers, the script compares each value with commonly used adult reference ranges and labels them as low, within range or high. These categories are then combined into textual summaries that describe what type of pattern is visible from an educational perspective.

For example, if ALT and AST are clearly above their typical limits while ALP and bilirubin are near normal, the tool may highlight a predominantly “enzyme-predominant” pattern. If ALP and GGT are elevated together with bilirubin, the summary may emphasize a more cholestatic pattern. The goal is not to name a disease, but to show how doctors conceptually group these markers when they consider possible liver or bile duct problems.

In addition to the individual badges, the analyzer also provides a plain-language interpretation box that lists key observations, reminds you that mild deviations can occur for many reasons, and encourages you to review the results with a healthcare professional for a complete assessment.

Using the LFT Analyzer is straightforward and takes only a few minutes if you have your lab report in hand:

• Open your official liver function test report or online lab portal.
• Locate each parameter that appears on the tool page (for example ALT, AST, ALP, GGT, bilirubin, albumin).
• Enter the numeric values into the corresponding input fields exactly as printed, including decimal points.
• Click the main “Analyze LFT” button.
• Scroll down to see which values fall inside or outside the reference range and read the educational notes summarizing the overall pattern.

You can adjust one value at a time and repeat the analysis to see how the description changes. This can be helpful when comparing old and new reports, or when your doctor is monitoring a result after medication changes. However, the tool is not meant to be used to self-adjust drugs, supplements or lifestyle without medical supervision.

Because liver and kidney function are often reviewed together, many users also consult the Kidney Function Analyzer and the eGFR Calculator to better understand how their filtration markers relate to their LFT results.

Clinicians request LFTs in many situations. Some people have them checked during routine wellness screening, while others are monitored because they take long-term medications that can occasionally stress the liver. LFTs are also part of the work-up for jaundice, suspected viral hepatitis, fatty liver seen on ultrasound, or unexplained fatigue and abdominal symptoms. The same panel may be repeated over time to see whether liver-related values are stable, improving or worsening.

The analyzer helps you spot common patterns described in medical literature. Predominantly elevated ALT and AST may reflect hepatocellular stress; high ALP and GGT with raised bilirubin may suggest difficulties with bile flow; low albumin can be a sign that liver synthetic function is reduced or that nutrition or other systemic issues are present. None of these patterns provide a standalone diagnosis; they simply highlight directions that doctors explore with further history, examination and sometimes imaging or additional blood tests.

In many chronic conditions, inflammation markers such as C-reactive protein are also checked. If you are evaluating possible inflammatory or metabolic contributors, you might find the CRP Analyzer or the Lipid Profile Analyzer useful companions as you review overall cardiovascular and metabolic risk with your healthcare team.

Does a normal LFT panel mean my liver is perfect?
Not necessarily. Many liver conditions can be present with normal tests at certain stages, and mild abnormalities may appear in healthy people. LFTs are only one piece of the puzzle that doctors use together with symptoms, examination and imaging.

Can I diagnose the cause of high ALT or AST with this tool?
No. The analyzer provides general educational explanations about patterns, but it cannot identify the specific cause of an abnormal value. Only a qualified healthcare professional, with full access to your history and medical records, can make a diagnosis.

Is this tool suitable for children or pregnancy?
The current LFT Analyzer is based on common adult reference intervals. Children, adolescents and pregnant individuals often have different normal ranges and clinical considerations, so interpretation in these groups must be carried out by their healthcare providers.

Can I use this tool to decide whether to start or stop medication?
No. Medication decisions depend on many factors beyond blood tests, including benefits, risks, other medical problems and clinical guidelines. The analyzer is meant to improve your understanding of the lab report so you can ask better questions, not to replace professional advice.

By combining the Liver Function Test Analyzer with other calculators on labscan.cloud, you can build a clearer picture of your lab profile while keeping your doctor in charge of diagnosis and treatment decisions.