Aspartate Aminotransferase (AST) 28 U/L: Is That Normal?

Bottom line: Aspartate Aminotransferase (AST) 28 U/L — see your doctor to discuss this result.

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
YOUR RESULT
28 U/L
Normal

Is Aspartate Aminotransferase (AST) 28 U/L Low, Normal, or High?

Aspartate Aminotransferase (AST) 28 U/L might be considered within the typical range for many adults. This level is generally not seen as unusually low or high. It suggests a picture of balance for this particular enzyme in your body. Understanding what this number means can offer you a clearer perspective on your general well-being and spark curiosity about how your body works.

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
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
Your AST 28 means different things depending on your other markers
AST + ALT
The AST/ALT ratio above 2:1 suggests alcoholic liver disease. Near 1:1 points to non-alcoholic fatty liver. Which is yours?
Check now →
AST + ALP
AST and ALP together distinguish between liver cell damage and cholestatic disease, which have completely different treatments.
Check now →
AST + Creatine Kinase
If your CK is also high, your elevated AST might be from muscle damage, not liver damage at all.
Check now →

Hidden Risk of Aspartate Aminotransferase (AST) 28 U/L

Even when a result like Aspartate Aminotransferase (AST) 28 U/L falls within a common range, it's a valuable moment to consider the broader context of your health. Sometimes, subtle influences on the body's internal environment can be present even when specific markers appear stable. A level that is considered typical doesn't mean there is no opportunity to reflect on health habits or potential underlying factors that could shift these numbers over time. The body is an intricate system, and many aspects contribute to its overall balance, affecting things like enzyme levels and how they're expressed. For example, consistent, even mild, stressors on your muscles could potentially influence Aspartate Aminotransferase (AST) levels, though perhaps not enough to push them outside the typical range. Factors often associated with general wellness, like emerging insulin resistance or early stages of fat accumulation in the liver, might not always dramatically alter Aspartate Aminotransferase (AST) initially, but they are crucial to consider for long-term health. Therefore, seeing an Aspartate Aminotransferase (AST) 28 U/L result can be a prompt to think holistically about your daily choices and their cumulative impact, even if no immediate alarm bells are ringing.

What Does a Aspartate Aminotransferase (AST) Level of 28 U/L Mean?

Aspartate Aminotransferase (AST) is an enzyme, which is a type of protein that helps speed up chemical reactions within your cells. It's found in many parts of your body, including the liver, heart, muscles, kidneys, and brain. Because it is present in various tissues, when cells in these areas are damaged, AST can be released. For example, if there's damage to liver cells, the amount of AST might increase. However, a result like Aspartate Aminotransferase (AST) 28 U/L, being within a common range, generally suggests that significant cell damage in these organs is not currently indicated by this specific marker. It's important to understand that AST is just one piece of the larger health puzzle. A healthcare provider looks at AST results alongside other tests and your overall health picture to gain a comprehensive understanding. The presence of Aspartate Aminotransferase (AST) itself is normal and vital for your body's metabolism, helping to convert food into energy and supporting various other bodily functions. Think of Aspartate Aminotransferase (AST) as an important helper in your body's internal chemistry, constantly working behind the scenes. Its presence at a level like Aspartate Aminotransferase (AST) 28 U/L reflects a healthy balance in its cellular environment, offering a snapshot of certain aspects of your internal health. This understanding empowers you to appreciate the intricate processes happening within you, even if a single number seems straightforward on its own.

Reading about one marker can be misleading.

Your blood test has multiple results that affect each other. AST 28 alone doesn't tell you the full picture. Your other markers do.

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Based on clinical guidelines · Data never stored

Lifestyle Changes for Aspartate Aminotransferase (AST) 28 U/L

Lifestyle choices beyond what you eat play a significant role in your overall well-being, which in turn can support the healthy functioning of your liver and other organs. Regular physical activity, for instance, is a cornerstone of good health. It doesn't have to mean intense gym sessions; even moderate daily movement, like brisk walking, cycling, or gardening, can contribute greatly. Engaging in activities you enjoy helps maintain a healthy weight and supports your body's metabolic processes. The American Heart Association often highlights the benefits of consistent physical activity for cardiovascular health, which is interconnected with liver health and can contribute to stable enzyme levels like Aspartate Aminotransferase (AST) 28 U/L. Aiming for around 150 minutes of moderate-intensity aerobic activity each week, spread across several days, can make a positive difference. Adequate hydration is another simple yet powerful practice. Drinking enough water throughout the day helps your body's systems function smoothly, including those involved in detoxification and nutrient transport, which are crucial for liver health. Sleep is also a critical, often underestimated, factor. A consistent sleep schedule and ensuring you get 7-9 hours of quality sleep each night allows your body to rest and repair. During sleep, your body performs essential maintenance tasks, impacting everything from hormone regulation to cellular repair. Finally, managing stress effectively is vital. Chronic stress can impact various bodily systems and contribute to inflammation. Techniques such as mindfulness, deep breathing exercises, spending time in nature, or engaging in hobbies can help reduce stress levels. By embracing these balanced lifestyle choices, you actively contribute to a foundation of health that supports a stable Aspartate Aminotransferase (AST) 28 U/L and overall vitality, giving you a sense of empowerment over your health journey.

What else did your blood test show?

Add your other markers to see how they interact with your AST 28

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