Aspartate Aminotransferase (AST) 388 U/L: Is That High?

Bottom line: Aspartate Aminotransferase (AST) 388 U/L — see your doctor to discuss this result.

YOUR RESULT
388 U/L
Very High
Combined with your ALT, the ratio distinguishes alcoholic from non-alcoholic causes
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Aspartate Aminotransferase (AST) RangeValues
Very LowBelow 5 U/L
Normal5 - 40 U/L
Mildly Elevated41 - 80 U/L
Elevated81 - 200 U/L
Very High201+ U/L

Is Aspartate Aminotransferase (AST) 388 U/L Low, Normal, or High?

Aspartate Aminotransferase (AST) 388 U/L might be considered elevated compared to what is typically expected in many individuals. Enzyme levels like this are generally viewed within a range, and a value of 388 U/L often falls outside the usual 'normal' parameters. While it is important not to jump to conclusions, an elevated Aspartate Aminotransferase (AST) 388 U/L level often signals that more attention and context might be beneficial. This particular measurement can offer valuable insights into your body's current state, encouraging a deeper understanding of what could be influencing it.

An AST of 388 U/L is 9.7 times the upper reference limit of 40 U/L, meaning it is 870% above normal and 348 U/L over the cutoff. That places it in the moderate elevation range (3 to 10 times the upper limit), where elevations are typically seen with viral hepatitis, alcoholic hepatitis, drug-induced liver injury, autoimmune hepatitis, or ongoing muscle injury, warranting timely clinical evaluation.

The liver and Aspartate Aminotransferase (AST) LIVER Produces Aspartate Aminotransferase (AST) Blood supply Bile output Elevated Aspartate Aminotransferase (AST) may indicate liver cell damage or stress

Hidden Risk of Aspartate Aminotransferase (AST) 388 U/L

An elevated Aspartate Aminotransferase (AST) 388 U/L can sometimes point to various underlying factors affecting cellular health, primarily in the liver, but also in other areas. This enzyme is present in several tissues, and its release into the bloodstream can indicate that cells have experienced some form of stress or damage. It is an informational marker that warrants further exploration rather than immediate alarm. Understanding the potential influences behind this elevation is the first step toward gaining clarity about your well-being. Several common situations might lead to such an increase, prompting a need for careful consideration.

What Does a Aspartate Aminotransferase (AST) Level of 388 U/L Mean?

Aspartate Aminotransferase (AST) is an enzyme, which is a type of protein that helps specific chemical reactions happen in your body. It is found in many different tissues, including the liver, heart, skeletal muscles, kidneys, and brain. When cells in these tissues are damaged, AST can leak out and enter the bloodstream, leading to higher levels detected in a blood assessment. Therefore, an Aspartate Aminotransferase (AST) 388 U/L result can suggest that cells containing this enzyme may have been affected in some way. This particular reading does not by itself pinpoint the exact location or cause of the cellular disruption, making it a piece of a larger health puzzle. It encourages further investigation to understand the full picture of what might be happening within your body's systems and what could be contributing to the elevated Aspartate Aminotransferase (AST) 388 U/L. The presence of this elevated enzyme activity acts as an indicator that some cells are releasing their contents more readily than usual, inviting a comprehensive review of health factors.

Lifestyle Changes for Aspartate Aminotransferase (AST) 388 U/L

Making thoughtful adjustments to one's daily routine can play a significant role in supporting overall cellular health, including the organs where Aspartate Aminotransferase (AST) is abundant. Engaging in regular physical activity, for instance, can enhance circulation and metabolism, contributing to better liver function and muscle well-being. However, it is also important to find a balance, as overly strenuous or unaccustomed exercise can temporarily elevate AST levels due to normal muscle breakdown and repair processes. Managing stress through practices like mindfulness, meditation, or spending time in nature can also positively impact the body's systems, potentially reducing inflammation that might contribute to cellular stress. Limiting exposure to environmental toxins and avoiding excessive alcohol consumption are crucial steps for liver health, given that the liver is responsible for processing many substances. These lifestyle considerations, when approached holistically, can create a supportive environment for maintaining enzyme levels within a typical range and help you understand the context of an Aspartate Aminotransferase (AST) 388 U/L reading. Empowering yourself with these conscious choices can be a proactive approach to well-being.

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Your Aspartate Aminotransferase Summary
SAVE THIS
Your result 388 U/L
Classification Very High
Optimal target 5 - 40 U/L
Retest in As directed by your doctor
Recommended Actions
Talk to your doctor as soon as possible to discuss treatment options
Stop alcohol completely until discussed with your doctor
Avoid acetaminophen and unnecessary medications
Begin moderate exercise (walking 30 min/day) once cleared by your doctor
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Ernestas K.
Written by
Clinical research writer specializing in human health, biology, and preventive medicine.
Reviewed against ALF, NIH, Mayo Clinic, AGA guidelines · Last reviewed March 22, 2026
Disclaimer: This content is for informational purposes only and is not medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making decisions about your health. BloodMarker does not establish a doctor-patient relationship. Terms & Conditions