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HDL42
Triglycerides180
ApoB110
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Alanine Aminotransferase (ALT)mg/dL
Gamma-Glutamyl Transferase (GGT)mg/dL
Alkaline Phosphatase (ALP)mg/dL
347 U/L very high
0 from your result
elevatedvery high
1normal 5 to 41500
what this means

347 is very high for AST, enough that the number itself is the problem.

this is the average reading · make it yours below

reading as

This level is usually treated as urgent. A result this far outside the range is normally checked by a doctor promptly, not at your next routine appointment.

You are 306 U/L over the normal ceiling of 41. That reads very high.

347 is very high. That is above the normal range for AST. How much it matters depends on the markers it travels with, which is what the sections below are rewritten against.

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Your BloodMarker report · Aspartate Aminotransferase (AST)

Aspartate Aminotransferase (AST) 347 U/L: Is That High?

Yes. 347 U/L is well outside the normal range for AST.

But a number alone is only half the story. Your Alanine Aminotransferase (ALT), Gamma-Glutamyl Transferase (GGT) and your risk factors decide how much it means. Tell it who you are.

Reviewed against ALF, NIH, Mayo Clinic, AGA guidelines · Last reviewed March 22, 2026

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YOUR NUMBERS

Normal: <40
Raised: 40-79
High: 80+

Values in U/L. Your Aspartate Aminotransferase (AST) of 347 is marked.

What they say together.

Aspartate Aminotransferase (AST) is read as part of a set. Add the ones printed next to it on your test and the figures below work themselves out, with the ranges this page uses for each.

U/LHIGH
U/LexampleNORMAL
U/LexampleRAISED
347 ÷ 38 =9.1AST to ALT ratio, the De Ritis ratio. Under 1 is the usual fatty-liver pattern; above 2 points at alcohol.
62 and 381.6GGT against ALT. GGT rising faster than ALT is the pattern that separates alcohol and bile flow from fat in the liver.
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Is Aspartate Aminotransferase (AST) 347 U/L Low, Normal, or High?

Aspartate Aminotransferase (AST) 347 U/L might be considered higher than typically expected. This specific value falls above the ranges often seen in general health screenings. When an enzyme level like Aspartate Aminotransferase (AST) 347 U/L appears, it usually signals that something in the body may warrant closer attention.

Understanding what this marker means can be the first step in a journey toward greater health awareness.

what this page cannot tell you

The AST/ALT ratio above 2:1 suggests alcoholic liver disease. Near 1:1 points to non-alcoholic fatty liver. Which is yours?

This page has not been given your ALT, so that half of the picture is missing here. It is describing the average reader with Aspartate Aminotransferase (AST), not you.

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An Aspartate Aminotransferase (AST) level of 347 U/L is a very high reading, signaling significant cellular damage, primarily in the liver, but also potentially in muscle or heart tissue. This value, nearly nine times the upper limit of the normal range (40 U/L), indicates an acute, serious issue requiring urgent medical investigation.

Such a dramatic AST elevation often points to acute liver injury, stemming from acute viral hepatitis, drug-induced injury (even common medications), or severe alcoholic hepatitis. Less common are very high AST levels from severe muscle trauma or rhabdomyolysis.

To determine the cause, your doctor will order further tests, including ALT for liver specificity, a full liver function panel, viral hepatitis serologies, and possibly liver imaging. While 347 U/L is concerning, patients should know the *trend* of this value — rising, peaking, or falling — provides crucial insight into the condition's severity and prognosis, often more informative than a single measurement.

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
for your numbersThe section below is written for 347 against a general adult target. What 347 means for you depends on the rest of your lipids and your other risk factors. Your report starts from your whole picture, not one line.

Hidden Risk of Aspartate Aminotransferase (AST) 347 U/L

An Aspartate Aminotransferase (AST) 347 U/L result can sometimes point to underlying situations that are not immediately obvious. This enzyme is present in various tissues throughout the body, including the liver, heart, muscles, and kidneys.

An elevation to Aspartate Aminotransferase (AST) 347 U/L does not by itself pinpoint the exact location or cause of any tissue irritation or damage, but it serves as a valuable signal.

It suggests a need for a comprehensive view of one's overall well-being, potentially revealing areas where the body is under stress or experiencing some form of cellular change. For instance, activities that lead to muscle breakdown or certain types of physical exertion can transiently raise AST levels, as can various states of internal health.

what this page cannot tell you

AST and ALP together distinguish between liver cell damage and cholestatic disease, which have completely different treatments.

This page has not been given your ALP, so it cannot tell you which of those you are. It is describing the average reader with Aspartate Aminotransferase (AST), not you.

Read mine against my ALP →

An Aspartate Aminotransferase (AST) level of 347 U/L, significantly above the typical normal range, signals considerable hepatocellular injury. At this heightened level, the liver's ability to perform its detoxification and metabolic functions is substantially impaired, increasing the risk of developing overt hepatic encephalopathy.

This condition occurs when the damaged liver can no longer effectively remove toxins from the blood, leading to their accumulation and affecting brain function, potentially causing confusion, personality changes, and even coma.

Furthermore, sustained inflammation at this magnitude can accelerate the progression towards liver fibrosis and cirrhosis, increasing long-term morbidity and mortality, with a notable risk of complications like portal hypertension and ascites.

for your numbersThe risk below is the average one for this AST. Whether it applies to you depends on the rest of your panel, which the article has not been given. Add them and this stops describing strangers.
  • Unexpected inflammation within organ systems.
  • Responses to certain physical demands or injuries.
  • Early indicators of systemic changes requiring further investigation.

This part is about the number

Everything below explains what raises Aspartate Aminotransferase (AST). It cannot tell you which of them is yours.

Your test can. Every marker on it is read against every other one, which is where the answer actually lives.

PDF or a photo of the printout · read in seconds

What Does a Aspartate Aminotransferase (AST) Level of 347 U/L Mean?

When we discuss Aspartate Aminotransferase (AST) 347 U/L, we are talking about an enzyme. Enzymes are like tiny helpers in your body, facilitating many chemical reactions essential for life. Aspartate aminotransferase, often simply called AST, is one such enzyme.

It plays a crucial role in metabolism, helping to process amino acids, which are the building blocks of proteins. While AST is found in many parts of the body, its presence is particularly notable in the liver and heart.

Therefore, when a level like Aspartate Aminotransferase (AST) 347 U/L is observed, it often draws attention to the health of these vital organs, among others. It acts as an indicator, suggesting that cells where AST is normally found might have released more of this enzyme into the bloodstream than is typical.

This release can occur when cells are irritated, inflamed, or damaged. It's important to understand that an Aspartate Aminotransferase (AST) 347 U/L result is just one piece of a much larger health puzzle.

It prompts further exploration rather than providing a definitive answer on its own. For example, other related markers are often evaluated alongside AST to gain a more complete picture of what might be influencing its level.

An AST value around 347 U/L most plausibly points to acute liver injury stemming from specific sources rather than chronic, slowly progressing disease. A highly probable cause is acute viral hepatitis, such as Hepatitis A or an early stage of Hepatitis B or C infection, leading to rapid cellular damage.

Another significant contender is drug-induced liver injury (DILI), particularly from common over-the-counter medications like acetaminophen taken in excess, or from prescription medications known to affect the liver, even if taken at prescribed doses by a susceptible individual.

Non-alcoholic fatty liver disease (NAFLD) with superimposed inflammation (NASH) can also present in this range, especially if accompanied by metabolic syndrome.

Your AST 347 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?
AST + ALP
AST and ALP together distinguish between liver cell damage and cholestatic disease, which have completely different treatments.
AST + Creatine Kinase
If your CK is also high, your elevated AST might be from muscle damage, not liver damage at all.
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for your numbersThis section lists every reason AST moves, because on its own the number cannot say which is yours. The rest of your panel and a few risk factors would cross most of them off in a sentence.

Lifestyle Changes for Aspartate Aminotransferase (AST) 347 U/L

Making conscious choices about your daily habits can contribute significantly to overall wellness, which in turn can influence various health markers. For someone with an Aspartate Aminotransferase (AST) 347 U/L finding, exploring these lifestyle elements, beyond just what you eat, becomes an important consideration in understanding and supporting your body's balance.

Regular physical activity, for instance, is known to have widespread benefits. However, it's also worth noting that very intense or strenuous exercise can temporarily elevate enzyme levels like Aspartate Aminotransferase (AST).

Therefore, finding a balanced and consistent exercise routine that suits your individual body is key. Adequate sleep is another cornerstone of health; getting enough restorative sleep allows your body to repair and rejuvenate, impacting everything from metabolism to immune function.

Managing stress effectively also plays a vital role. Chronic stress can influence various bodily systems and their functions. Techniques such as mindfulness, meditation, or engaging in hobbies you enjoy can help in navigating daily pressures.

Hydration, by consistently drinking enough water throughout the day, supports kidney function and helps transport nutrients and waste, contributing to overall cellular health. These broader lifestyle adjustments are not quick fixes for an Aspartate Aminotransferase (AST) 347 U/L reading, but they form the foundation of a healthy body that is better equipped to maintain equilibrium.

An AST result of 347 U/L necessitates immediate medical evaluation. Schedule an urgent appointment with your primary care physician or a gastroenterologist specializing in liver diseases within 24-48 hours. They will likely order a comprehensive panel of liver function tests, including ALT, bilirubin, alkaline phosphatase, and albumin, alongside viral hepatitis serologies and autoimmune markers.

You should meticulously review all current medications and supplements with your doctor, as discontinuation or adjustment may be crucial. Temporarily abstain from alcohol completely and avoid strenuous physical activity that could further stress the liver until advised otherwise by your physician. Lifestyle changes focusing on a balanced, low-fat diet should be initiated.

for your numbersThe portions below are generic because the page does not know your body. Add your height and weight above and the fibre targets resize to you at once, a small preview of what the full report does with every number.

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  • Read in orderWhich number to deal with first, and which ones are only following it.
  • Written, not chartedThe same voice as this page, about your own blood, on your own page.
  • Every retest joins itThe line builds itself, so the next version shows what moved.

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