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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
103 U/L elevated
0 from your result
elevatedvery high
1normal 5 to 41500
what this means

103 is elevated for AST, far enough out to be worth acting on.

this is the average reading · make it yours below

reading as

This is outside the range. Worth acting on, and worth seeing next to your other numbers first: the same value means different things depending on what is around it.

You are 62 U/L over the normal ceiling of 41. That reads elevated.

103 is elevated. 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) 103 U/L: Is That High?

Borderline. 103 U/L is 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 103 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
103 ÷ 38 =2.7AST 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) 103 U/L Low, Normal, or High?

Aspartate Aminotransferase (AST) 103 U/L might be considered higher than what is typically expected for many adults. This enzyme is found in various parts of the body, and levels outside the usual range can sometimes spark questions about what is happening internally.

Understanding what this number means is a first step in exploring your body's signals and recognizing that your body is communicating with you. It's a journey into understanding your health more deeply, empowering you to engage more fully in your wellness.

What could be contributing to such a measurement, and what steps can you take to learn more about your unique health profile?

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.

Read mine against my ALT →

An Aspartate Aminotransferase (AST) level of 103 U/L signifies a moderate, yet distinct, elevation above the typical reference range, indicating potential cellular damage, most commonly in the liver or muscles.

At this specific level, common culprits often include mild liver inflammation, perhaps stemming from alcohol intake, certain medications, or early stages of fatty liver disease. Alternatively, significant muscle damage from strenuous exercise, a recent injury, or even some muscle disorders could be the cause.

This elevation is significant enough to warrant attention but is not typically indicative of immediate, severe acute liver failure. To pinpoint the source, clinicians usually order a comprehensive liver function panel, including Alanine Aminotransferase (ALT) to assess the AST/ALT ratio, along with tests for specific hepatitis viruses, iron levels, or an ultrasound of the liver.

If muscle damage is suspected, creatine kinase (CK) levels might be checked, alongside a detailed history regarding medication use, alcohol consumption, and recent physical activity. A patient should understand that while this AST elevation is concerning, it doesn't automatically mean permanent damage or a severe chronic condition.

Many causes are reversible with lifestyle adjustments or medication changes, and often, repeat testing after a short period can show improvement, especially if related to temporary factors.

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 103 against a general adult target. What 103 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.
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.

Hidden Risk of Aspartate Aminotransferase (AST) 103 U/L

An Aspartate Aminotransferase (AST) 103 U/L level, while not a diagnosis itself, can sometimes point to hidden stresses within the body that may not yet show clear outward signs. This enzyme's presence in higher amounts can suggest that cells containing it might be experiencing some form of activity, irritation, or even subtle damage.

Think of it as an internal alert system, signaling that something might be requiring a bit more attention under the surface. It's like a subtle signal that invites further investigation into aspects of your overall health, prompting a deeper look even when you might not feel specific symptoms.

Elevated AST levels, even moderately so, warrant attention to pinpoint their origin and understand their implications for long-term well-being and cellular vitality. Uncovering these potential underlying issues early can be a proactive step towards maintaining robust health and preventing future complications, offering a valuable chance to address concerns before they escalate.

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 AST level of 103 U/L, significantly above the normal range, signals ongoing cellular damage, primarily within the liver and to a lesser extent, muscle tissue. This sustained elevation increases the risk of developing more pronounced liver inflammation, potentially progressing towards fibrosis or cirrhosis over time if the underlying cause remains unaddressed.

Furthermore, significantly elevated AST can be indicative of acute hepatic injury, such as from viral hepatitis or acute drug toxicity, which may present with symptoms like jaundice or abdominal pain.

Muscle breakdown, if contributing to this level, can lead to impaired muscle function and, in severe cases, rhabdomyolysis, although liver involvement is more commonly associated with this specific marker.

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.
  • Potential liver inflammation or mild irritation.
  • Temporary muscle strain, overuse, or injury.

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 103 U/L Mean?

Aspartate Aminotransferase (AST) 103 U/L reflects the activity of a specific enzyme found inside many cells throughout your body. Think of enzymes as tiny, essential workers within your cells that help speed up vital chemical reactions necessary for life, such as turning food into energy or building new tissues.

AST is particularly abundant in the cells of the liver, heart, skeletal muscles, kidneys, and even the brain. When these cells are damaged, inflamed, or simply undergo significant activity, AST can leak out from inside the cells and into the bloodstream, leading to higher levels being detected.

So, an elevated AST level isn't about the enzyme itself being harmful; rather, it’s a powerful indicator, a messenger if you will, signaling that the tissues it comes from might be experiencing some form of stress or change.

For many individuals, this level often prompts a closer look at liver health, as the liver holds a significant concentration of AST and is constantly working to process everything we consume and encounter.

However, it's crucial to remember that other organs and tissues, like those in your muscles after a tough workout, can also contribute to this elevation. Understanding the full picture often involves considering other related measurements, your personal health history, recent activities, and any medications you might be taking.

It’s about gathering clues to fully appreciate what your body is trying to tell you.

An AST reading of 103 U/L often points to liver inflammation or injury, with non-alcoholic fatty liver disease (NAFLD) being a very common culprit, often linked to obesity, insulin resistance, and a diet high in processed foods and sugars.

Acute viral hepatitis, such as Hepatitis A, B, or C, is another strong possibility, especially if accompanied by fatigue or jaundice. Certain medications, including statins used for cholesterol management, acetaminophen in higher doses, or some antibiotics, can also induce liver stress resulting in this level of elevation. Less commonly, strenuous exercise shortly before the blood draw can transiently increase AST.

Your AST 103 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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The part one number cannot show
Your AST of 103 means different things depending on its companion markers.
Your full panel shows which story is yours.
See what is driving yours →

Lifestyle Changes for Aspartate Aminotransferase (AST) 103 U/L

Understanding an Aspartate Aminotransferase (AST) 103 U/L reading also involves considering your daily habits and choices, beyond just what you eat. Lifestyle plays a profound role in our overall health and can significantly influence various body markers, including enzyme levels.

For instance, engaging in strenuous physical activity, especially new, unaccustomed, or intense exercise, can temporarily increase AST levels. This isn't necessarily a sign of damage but rather a reflection of the normal process of muscle repair and turnover that occurs after physical exertion.

Ensuring adequate recovery time after workouts, listening to your body, and gradually increasing intensity are important aspects of a healthy exercise routine that can also help keep your internal markers balanced.

Organizations like the American Heart Association often emphasize the importance of regular physical activity and stress management for overall well-being. Managing stress effectively through techniques like mindfulness, meditation, deep breathing exercises, or even engaging in hobbies you enjoy, can contribute to a healthier internal environment by reducing the physiological impact of chronic stress.

Sufficient, restorative sleep is another foundational pillar of well-being, allowing the body to repair, rejuvenate, and restore itself at a cellular level. Without enough quality sleep, the body can remain in a state of heightened stress, which might indirectly influence enzyme levels.

Furthermore, responsible alcohol consumption is a key consideration, as alcohol can directly impact liver health, a primary source of AST. Excessive or chronic alcohol intake can stress the liver, leading to elevated enzyme levels.

Staying well-hydrated throughout the day supports kidney function, which plays a role in filtering waste and maintaining overall biochemical balance within the body. Exploring these aspects of your routine and making conscious choices can provide valuable insights into what might be influencing your AST levels, empowering you to take charge of your daily well-being.

With an AST of 103 U/L, repeat testing within 2-4 weeks is crucial to determine if the elevation is persistent or transient. Focus on immediate dietary modifications by reducing intake of saturated fats, refined carbohydrates, and alcohol, while increasing fiber and lean protein.

If taking medications known to affect liver function, discuss potential alternatives with your prescribing physician. Tracking symptoms like fatigue, jaundice, abdominal pain, or dark urine is important. Referral to a gastroenterologist or hepatologist is recommended for comprehensive evaluation, including further liver function tests, viral hepatitis screening, and abdominal ultrasound.

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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What you actually get

A page like this one, written about you.

You have just spent a few minutes reading a page written for a number. Upload your whole test and you get the same thing written for your body: every marker read against every other, in the order they should be fixed, as something you read rather than a dashboard you have to decode.

  • 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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