The question is incomplete. "LFT Total" isn't a specific liver function test (LFT). LFTs comprise several individual tests, each with its own normal range. Therefore, there's no single "normal range for LFT total." To answer accurately, we need to specify which LFT is being referenced.
However, we can provide normal ranges for some common LFT components:
Common Liver Function Tests and Their Normal Ranges
Several sources offer ranges, and these can vary slightly depending on the laboratory and methodology used. It is crucial to always refer to the specific ranges provided by your own lab report.
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Alanine Aminotransferase (ALT): A reference mentions a normal range of 7-56 units/liter. [¹] Other sources may show slightly different ranges.
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Aspartate Aminotransferase (AST): A normal range of 10-40 units/liter is given in one source. [¹] Again, variability exists between labs.
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Total Protein: The normal range for total protein is typically stated as 6.0 to 8.3 grams per deciliter (g/dL) or 60 to 83 g/L. [², ³] However, this is not a liver-specific test, but rather a measure of protein in the blood, and the liver plays a role in protein synthesis.
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Albumin: Often included in a comprehensive LFT panel, albumin is a protein produced by the liver. Lower-than-usual levels may suggest liver issues. [⁴] The specific normal range will vary based on the lab.
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Bilirubin (Total and Direct): These tests measure bilirubin, a byproduct of red blood cell breakdown processed by the liver. Normal ranges vary but are usually provided on individual lab reports. One source indicates a normal range of 0.3 mg/dL for direct bilirubin. [⁵]
Important Note: Results outside the normal range do not automatically diagnose a liver problem. Further investigation and clinical correlation are necessary for proper diagnosis.
[¹] Porteia.com: Liver Function Test - About, Normal Range, Preparation, Test Results ... https://www.portea.com/labs/diagnostic-tests/liver-function-144/
[²] Mount Sinai: Total protein Information https://www.mountsinai.org/health-library/tests/total-protein
[³] Testing.com: Total Protein, Albumin-Globulin (A/G) Ratio Test https://www.testing.com/tests/total-protein-albumin-globulin-ag-ratio/
[⁴] Mayo Clinic: Liver function tests https://www.mayoclinic.org/tests-procedures/liver-function-tests/about/pac-20394595
[⁵] Prestige ER: How to Read & Interpret Your Liver Function Test https://prestigeer.com/blog/read-interpret-liver-function-test/
