Liver Function Test (LFT): Normal Range, High and Low Readings Explained

The liver is an organ with a very important role in the body. Aids in digestion, assimilation, elimination rendering, production of essential proteins and regulation of various metabolic processes Liver function changes can impact the health of the person and may occur without the individual having any symptoms. Liver Function Test (LFT) is a combination of blood tests that can be used to assess the functioning of the liver and certain enzymes and proteins or other blood substances. Molecular Diagnostics and Therapy offers diagnostic testing services that enable doctors to gauge the condition of the liver as well as to detect any abnormalities.

What Is a Liver Function Test (LFT)?

Liver Function Test (LFT) is a blood test that helps assess liver health and functioning. Fasting blood chemistries assess the release or production of various liver substances such as enzymes, bilirubin, albumin, and total protein. Doctors use these measurements to help diagnose any inflammation, damage, bile flow issues, or changes in liver function to produce important proteins. An LFT can be ordered as a routine checkup, if someone has symptoms related to liver disease, or while a liver disorder is being monitored.

Why Is a Liver Function Test Performed?

The rationale for an LFT is to detect changes in blood markers associated with liver changes and to aid the physician in determining possible causes of the liver changes. It might be suggested in individuals with signs and symptoms, for example, yellow discolouration of skin or eyes, dark urine, abdominal pain, fatigue without a cause, nausea, lack of desire or appetite, and swelling in the abdomen or legs. 

Otherwise, doctors might also order an LFT to check fatty liver disease, hepatitis, or alcohol-related liver disease. Can be used to determine if some drugs are having an impact on the liver and to track changes over time during treatment. Percy may also need to have their liver function periodically tested if they have diabetes, obesity, a high level of cholesterol in their blood, or liver disease in their past medical history. Regular monitoring can help detect abnormalities at an early stage, before they become more noticeable health issues.

Normal LFT Range

Reference values for LFTs may be influenced by age, sex, laboratory method, and individual health status. The following are the rough ranges used for adults, in general. ALP typically ranges from 7-56 U/L, AST is approximately 10-40 U/L, and direct bilirubin is generally 0-0.3 mg/dL, although there is no upper limit for ALP. Typical values of Albumin are 3.5-5.0g/dL and for total protein, a range of 6.0-8.3g/dL is typical. These are merely indicative values and can vary from lab to lab. Compare your findings to those listed in your lab report and reference ranges.

What Do High and Low LFT Readings Mean?

Elevated liver enzymes, such as ALT and AST, can be signs of liver cell inflammation or damage. It may be caused by other diseases such as fatty liver disease or viral hepatitis, alcohol consumption, some medications, or other medical conditions. But high enzyme levels are not always due to the presence of serious liver disease. An increased ALP may also be associated with bile duct disorders but can also be elevated due to bone disorders. Elevated bilirubin can, in some individuals, indicate liver inflammation or a blockage of the flow of bile.

Hypoalbuminemia can be a result of decreased liver production of protein, especially in late liver disease. But decreased albumin levels can also be caused by kidney disease, diminished nutritional intake, or inflammation. If a drop in the levels of liver enzymes is the only problem, this usually isn't a cause for concern. These readings are analysed with the symptoms, medical history, physical examination, and other investigations. The abnormal LFT result does not necessarily tell it all.

How to Understand an LFT Report?

An LFT report lists the measured values of different liver-related parameters along with their reference ranges. Values outside the expected range may be marked as high or low. For example, increased ALT and AST may suggest liver cell injury, while raised bilirubin may be associated with jaundice. Low albumin may require further evaluation of liver protein production and other possible causes. Doctors may recommend additional investigations, such as an abdominal ultrasound, viral hepatitis screening, or other blood tests, depending on the results. It is important not to start or stop medicines based only on an LFT report without medical advice.

Liver Function Test Cost

The liver function test cost depends on the number of parameters included, the diagnostic laboratory, and the location where the test is performed. A basic LFT package may include ALT, AST, ALP, bilirubin, albumin, and total protein, while some packages may include additional measurements. Before booking, check which parameters are covered and whether any preparation is required. Contact Molecular Diagnostics and Therapy for information about current LFT availability and pricing.

Conclusion

LFT (Liver Function Test) is an essential investigation that is performed for assessing liver health and providing insight into possible abnormalities. Different measurements/enzymes like ALT, AST, ALP, bilirubin, albumin, and total protein give useful information on various liver functions. Those who have other liver issues or risk factors, such as diabetes and obesity, should consider regular testing. Molecular Diagnostics and Therapy has diagnostic testing capabilities that aid in timely evaluation of health conditions. Talk to your doctor about your LFT test: If you have a test report, ask your doctor if more tests are needed or if a treatment is recommended.