Aspartate Aminotransferase (AST) 337 U/L: Is That High?

Bottom line: Aspartate Aminotransferase (AST) 337 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
337 U/L
Very High

Is Aspartate Aminotransferase (AST) 337 U/L Low, Normal, or High?

Aspartate Aminotransferase (AST) 337 U/L might be considered an elevated level compared to typical reference ranges. When the Aspartate Aminotransferase (AST) value reaches 337 U/L, it suggests that something could be causing more AST to be present. This particular level is generally higher than what is commonly seen in healthy individuals. Understanding what might lead to this elevation can be a step toward understanding your overall well-being. Let's explore what this number might mean for you.

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 337 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) 337 U/L

An elevated Aspartate Aminotransferase (AST) 337 U/L reading can sometimes hint at underlying issues that might not be obvious from how you feel day-to-day. While AST is found in several parts of the body, including the liver, heart, muscles, and kidneys, a significant elevation like Aspartate Aminotransferase (AST) 337 U/L often points towards potential cell damage or stress within these organs. It’s important to understand that AST itself isn’t a disease but a sign that cellular activity might be heightened in some way. This particular level, Aspartate Aminotransferase (AST) 337 U/L, invites a closer look at various aspects of health, ranging from liver function to muscle integrity. Exploring potential influences on AST levels can offer insights into areas of well-being that might benefit from attention.

What Does a Aspartate Aminotransferase (AST) Level of 337 U/L Mean?

Aspartate Aminotransferase, or AST, is a protein, an enzyme, crucial for metabolism. Think of enzymes as tiny workers in your body that help chemical reactions happen. AST is found in many cells throughout your body, with higher amounts in your liver, heart, muscles, kidneys, and even your red blood cells. When these cells are damaged or inflamed, they can release AST into the bloodstream. This is why an elevated Aspartate Aminotransferase (AST) 337 U/L level can sometimes be a signal that something is happening within these tissues. It's like an alert system. While Aspartate Aminotransferase (AST) 337 U/L itself doesn't tell you exactly which organ is affected, it prompts further investigation. Often, healthcare providers look at AST in conjunction with another enzyme called Alanine Aminotransferase (ALT), which is more specific to the liver. If both AST and ALT are elevated, especially with ALT being higher, it often points more strongly to the liver. However, if AST is significantly higher than ALT, or if there's no ALT elevation, it might suggest issues with other organs like the heart or muscles. The measurement of Aspartate Aminotransferase (AST) 337 U/L, therefore, is an important piece of information that helps build a broader picture of your internal health. It encourages a thoughtful exploration of possible causes, rather than serving as a definitive diagnosis on its own.

Reading about one marker can be misleading.

Your blood test has multiple results that affect each other. AST 337 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) 337 U/L

While specific medical guidance is always personal, various general lifestyle choices can contribute to overall well-being and might support healthy organ function, which in turn could influence levels like Aspartate Aminotransferase (AST) 337 U/L. Engaging in regular, moderate physical activity, for instance, is known to support cardiovascular health and can help manage weight, which benefits the liver. The American Heart Association often recommends at least 150 minutes of moderate-intensity aerobic exercise per week. It's important to find activities you enjoy and that fit your fitness level. Avoiding excessive alcohol consumption is another critical step, as alcohol is a well-known stressor for the liver, one of the primary organs where AST is abundant. Reducing or eliminating alcohol can significantly reduce the burden on this vital organ. Managing stress through practices like mindfulness, meditation, or spending time in nature can also have a positive ripple effect throughout the body. Chronic stress can impact various bodily systems, and finding healthy coping mechanisms is valuable. Ensuring you get adequate, restful sleep each night allows your body to repair and regenerate, supporting overall cellular health. Typically, 7-9 hours of sleep for adults is recommended by organizations like the National Sleep Foundation. Furthermore, avoiding exposure to environmental toxins, where possible, can lessen the workload on your detoxification organs. These supportive habits, when consistently practiced, contribute to a healthier internal environment and can play a role in maintaining balanced bodily functions, which might indirectly influence readings such as Aspartate Aminotransferase (AST) 337 U/L. They empower you to take an active role in your health journey.

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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