What do elevated ALT and AST levels mean?

Elevated ALT and AST levels may indicate liver damage caused by hepatitis, excessive alcohol consumption, medications, or other liver diseases.

Can exercise affect liver test results?

Yes, intense exercise can temporarily elevate liver enzymes, especially AST. It is recommended to avoid vigorous exercise for 24 hours before the test.

What medications can alter liver function tests?

Many medications can affect results, including acetaminophen, statins, antibiotics, and anti-inflammatory drugs. Always inform your doctor of everything you take.

Liver Panel

Liver Function Tests (LFTs)

Liver function tests evaluate liver health by measuring enzymes, proteins, and substances produced or processed by the liver. They include ALT, AST, alkaline phosphatase, bilirubin, albumin, and total protein. They are essential for detecting liver damage, hepatitis, cirrhosis, and medication side effects.

Preparation

Fasting for 8 to 12 hours is recommended. Avoid alcohol consumption for at least 24 hours before the test and report all medications you are taking.

Included Tests

LOINC	Test	Unit	Range
1742-6	Alanine Aminotransferase (ALT/GPT)	U/L	7 – 56
1920-8	Aspartate Aminotransferase (AST/GOT)	U/L	10 – 40
6768-6	Alkaline Phosphatase	U/L	44 – 147
1975-2	Total Bilirubin	mg/dL	0.1 – 1.2
2324-2	Gamma-Glutamyl Transferase (GGT)	U/L	9 – 48
2885-2	Total Protein	g/dL	6 – 8.3
1751-7	Albumin	g/dL	3.5 – 5.5

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Frequently Asked Questions

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