A good LFT (Liver Function Test) report shows that your liver is functioning within the normal range. This means the levels of enzymes and proteins measured in your blood are within the established reference intervals. These intervals can vary slightly between labs, so always check the ranges provided on your specific report.
Understanding Liver Function Tests
LFTs measure several substances produced by the liver. These include enzymes like alanine aminotransferase (ALT), aspartate aminotransferase (AST), and alkaline phosphatase (ALP), as well as proteins such as albumin and total serum protein. The levels of these substances can indicate liver health. Elevated levels often suggest liver damage or disease.
Key Liver Function Test Components & Normal Ranges (Example):
The following ranges are examples and may vary depending on the laboratory. Always refer to the ranges provided on your individual report. Reference values are commonly found on the report itself.
| Component | Normal Range (Example) |
|---|---|
| Alanine Aminotransferase (ALT) | 4-36 U/L |
| Aspartate Aminotransferase (AST) | 5-34 U/L |
| Alkaline Phosphatase (ALP) | 40-150 U/L |
| Total Serum Protein | 6.4 - 8.3 g/dL |
| Albumin | 3.8 - 5.0 g/dL |
Note: Other tests, like bilirubin and lactate dehydrogenase (LDH), are also sometimes included in a comprehensive LFT panel.
Interpreting a "Good" LFT Report:
A "good" LFT report indicates that all the measured components fall within the lab's normal reference range. This suggests that your liver is functioning properly and there are no apparent signs of liver damage or disease.
What to Do if Your LFT Results are Abnormal:
If your LFT results show values outside the normal range, it's crucial to discuss them with your doctor. Abnormal results don't always mean a serious problem but warrant further investigation. Your doctor will consider other factors like your medical history, symptoms, and lifestyle to determine the next steps.
Resources:
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