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HDL42
Triglycerides180
ApoB110
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Aspartate Aminotransferase (AST)mg/dL
Gamma-Glutamyl Transferase (GGT)mg/dL
Alkaline Phosphatase (ALP)mg/dL
25 U/L normal
0 from your result
normalmildly elevatedelevatedvery high
1normal 5 to 41330
what this means

25 is normal for ALT, which is where you want it.

this is the average reading · make it yours below

reading as

Nothing here needs chasing. ALT reads in range, so the useful thing is the direction it moves next. Keep this number to compare your retest against.

You are inside the normal range of 5 to 41 U/L. Right where you want it.

25 is normal. This is the range the reference table treats as normal for ALT, so this is maintenance rather than repair. What it means for you still depends on the rest of your panel.

recheck yearly

Your BloodMarker report · Alanine Aminotransferase (ALT)

Alanine Aminotransferase (ALT) 25 U/L: Is That Normal?

Yes. 25 U/L is in the normal range for ALT.

But a number alone is only half the story. Your Aspartate Aminotransferase (AST), 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 30, 2026

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YOUR NUMBERS

Normal: <44
Raised: 44-87
High: 88+

Values in U/L. Your Alanine Aminotransferase (ALT) of 25 is marked.

What they say together.

Alanine Aminotransferase (ALT) 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/LNORMAL
U/LexampleNORMAL
U/LexampleRAISED
34 ÷ 25 =1.4AST to ALT ratio, the De Ritis ratio. Under 1 is the usual fatty-liver pattern; above 2 points at alcohol.
62 and 252.5GGT 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 Alanine Aminotransferase (ALT) 25 U/L Low, Normal, or High?

Alanine Aminotransferase (ALT) 25 U/L might be considered within a healthy range for many individuals, suggesting the body's internal systems, particularly those involving energy production in cells, are working smoothly.

This specific measurement reflects the activity of an important enzyme primarily found inside your liver cells, acting as a crucial worker in your body's energy factory. When this enzyme level is 25 U/L, it suggests these cellular processes are generally well-contained and efficient, indicating a healthy cellular environment.

While exact normal ranges can vary slightly among different laboratories, a value of 25 U/L is often seen as a sign that your body's internal machinery is functioning effectively. Understanding what this number represents can offer valuable insights into your body's amazing biological processes.

what this page cannot tell you

The AST/ALT ratio distinguishes alcoholic from non-alcoholic liver damage. Without both, the cause is unclear.

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

Read mine against my AST →

An Alanine Aminotransferase (ALT) level of 25 U/L signals excellent liver health, falling comfortably within the typical normal range of 5-40 U/L. This value strongly suggests your liver is functioning efficiently, processing toxins and producing vital proteins without significant distress or damage.

Such a reading is most commonly associated with a healthy lifestyle, including a balanced diet, regular physical activity, and moderate alcohol consumption, if any. It effectively rules out common acute liver injuries and chronic conditions that elevate ALT, such as fatty liver disease, viral hepatitis, or medication-induced liver stress.

At this optimal level, further specific diagnostic tests related to liver function are generally not indicated. Instead, this ALT value would typically be re-evaluated as part of your routine health screenings, usually on an annual basis or as recommended by your healthcare provider based on your overall health profile.

What many patients find surprising is that even within the "normal" range, ALT can fluctuate slightly day to day based on recent exercise, diet, and even minor muscle strain, but 25 U/L represents a stable and healthy baseline.

Maintaining this level often involves continuing good hydration and being mindful of over-the-counter medications that can stress the liver if misused.

The liver and Alanine Aminotransferase (ALT) LIVER Produces Alanine Aminotransferase (ALT) Blood supply Bile output Elevated Alanine Aminotransferase (ALT) may indicate liver cell damage or stress
for your numbersThe section below is written for 25 against a general adult target. What 25 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 Alanine Aminotransferase (ALT) 25 U/L

Even when your Alanine Aminotransferase (ALT) level is at a healthy 25 U/L, it is still valuable to understand what this number truly represents in the broader context of your health.

A seemingly ideal result might sometimes lead to a sense of complacency, where the focus on ongoing wellness habits could inadvertently lessen. While 25 U/L typically indicates healthy cellular activity, it is important to remember that it is just one snapshot, and subtle factors can always be at play behind the scenes.

For instance, early stages of certain conditions might not yet cause significant ALT elevation, meaning that a good result should still encourage continued vigilance in maintaining overall health and discussing any broader wellness concerns with your healthcare provider.

Understanding this baseline 25 U/L reading gives you a personal reference point for future health assessments, helping to identify any shifts over time. The National Institutes of Health (NIH) emphasizes that optimal health involves a holistic view, and while a 25 U/L ALT is reassuring, it doesn't replace the importance of regular check-ups and a comprehensive health strategy.

It’s important to appreciate that individual 'normal' ranges can subtly differ, and your personal baseline of Alanine Aminotransferase (ALT) 25 U/L serves as a key marker for your body's unique internal balance.

The absence of elevated ALT doesn't mean you shouldn't be proactive about your health, especially considering how environmental and lifestyle factors continuously interact with your body’s delicate systems.

what this page cannot tell you

ALT elevated with normal ALP suggests liver cell damage. The reverse points to bile duct or bone issues. Very different problems.

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 Alanine Aminotransferase (ALT), not you.

Read mine against my ALP →

While a result of 25 U/L for ALT falls squarely within the expected reference range, it's crucial to understand that even seemingly stable values can mask early, subclinical hepatocellular stress.

Persistent, though normal, ALT levels might reflect a low-grade, ongoing inflammatory process within the liver, potentially driven by factors like undiagnosed non-alcoholic fatty liver disease (NAFLD) or early viral hepatitis.

The accumulation of fat or subtle cellular damage can lead to fibrotic changes over time, a slow progression that doesn't manifest in elevated enzyme levels until significant damage has occurred.

Therefore, a value at this point on the spectrum, while currently benign, warrants continued monitoring to detect any subtle shifts indicative of underlying pathology before irreversible changes take root.

for your numbersThe risk below is the average one for this ALT. 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.
  • Regular wellness check-ups are always important.
  • Your 25 U/L is a valuable personal health baseline.
  • Slight future changes might signal a need for discussion.

This part is about the number

Everything below explains what raises Alanine Aminotransferase (ALT). 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 Alanine Aminotransferase (ALT) Level of 25 U/L Mean?

When your Alanine Aminotransferase (ALT) is 25 U/L, it gives us a clear picture of what's happening at a cellular level, particularly within your liver. Imagine your liver cells as small, bustling factories, each filled with specialized workers, or enzymes, carrying out vital tasks.

ALT is one of these crucial workers. Its main job is to help convert food into energy, especially by processing amino acids, which are the building blocks of proteins. This conversion process is essential for your body's overall metabolism and energy production.

In a healthy liver cell, these ALT enzymes stay mostly inside their 'factory' walls, diligently performing their duties. A reading of 25 U/L suggests that the 'factory walls' of your liver cells are largely intact, and only a very small, normal amount of these enzyme 'workers' are naturally exiting the cells.

Think of it like a well-managed factory where all the employees are inside doing their jobs efficiently, with only a negligible number leaving during breaks. This specific number, Alanine Aminotransferase (ALT) 25 U/L, therefore indicates a good state of cellular integrity and efficient metabolic function within the liver and other organs where ALT is found, such as the kidneys and muscles, though its concentration is highest in the liver.

It signifies that the liver's intricate machinery is humming along without significant stress or damage. Understanding this core function helps you appreciate the nuanced information a single lab value can provide about the complex, interconnected systems within your body, showcasing their remarkable ability to maintain balance and health.

An Alanine Aminotransferase (ALT) level of 25 U/L is highly likely to be influenced by recent dietary intake, particularly a high consumption of processed foods, sugary beverages, or excessive saturated fats, which can temporarily increase liver enzyme activity even without significant disease.

Certain over-the-counter medications, including some pain relievers or herbal supplements, can also exert a mild, transient burden on the liver, leading to values at the upper end of normal. Lifestyle factors such as inadequate sleep or chronic, low-level stress can contribute to subtle hepatic strain, manifesting as a value within the typical reference range.

Your ALT 25 means different things depending on your other markers

ALT + AST
The AST/ALT ratio distinguishes alcoholic from non-alcoholic liver damage. Without both, the cause is unclear.
ALT + ALP
ALT elevated with normal ALP suggests liver cell damage. The reverse points to bile duct or bone issues. Very different problems.
ALT + Total Bilirubin
Elevated ALT with high bilirubin means the liver damage is severe enough to impair bile processing.
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for your numbersThis section lists every reason ALT 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 Alanine Aminotransferase (ALT) 25 U/L

Maintaining a healthy Alanine Aminotransferase (ALT) level of 25 U/L involves more than just specific treatments; it often comes down to consistent, positive lifestyle choices that support your entire body's well-being.

Regular physical activity plays a significant role in helping your body's metabolic processes function efficiently. When you engage in moderate exercise, such as brisk walking, swimming, or cycling for at least 150 minutes per week, as recommended by the American Heart Association, you help to improve blood flow, reduce inflammation, and support healthy organ function, including your liver.

This consistent movement ensures that your cellular 'factories' remain robust and capable of handling their tasks, contributing to stable ALT levels. Furthermore, managing stress is crucial. Chronic stress can impact various bodily systems, potentially leading to systemic inflammation, which in turn can place undue strain on organs like the liver.

Techniques such as mindfulness, meditation, yoga, or simply spending time in nature can help regulate your body's stress response, promoting a more balanced internal environment. Adequate sleep is another cornerstone of wellness.

During sleep, your body undergoes vital repair and regeneration processes. Insufficient sleep can disrupt these natural cycles, affecting everything from hormone balance to metabolic function, and potentially influencing enzyme levels.

Aiming for 7-9 hours of quality sleep each night supports your body's natural healing mechanisms, helping to keep your Alanine Aminotransferase (ALT) levels stable and within that healthy range of 25 U/L.

Embracing these integrated lifestyle approaches empowers your body to maintain its optimal state, supporting the cellular health reflected in your Alanine Aminotransferase (ALT) 25 U/L reading.

Given your ALT reading of 25 U/L is within the normal range, the primary action is to maintain a consistent healthy lifestyle. Focus on a diet rich in whole foods, lean proteins, and healthy fats, while significantly reducing processed items and added sugars.

Aim for at least 150 minutes of moderate-intensity aerobic exercise per week, such as brisk walking or cycling. Track your dietary habits and stress levels for a month and note any correlation with subjective feelings of well-being or fatigue; this self-monitoring can reveal subtle triggers.

Rechecking your ALT in six months to a year is generally sufficient, unless new symptoms emerge.

for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.
for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.

Diet Changes for Alanine Aminotransferase (ALT) 25 U/L

While your Alanine Aminotransferase (ALT) 25 U/L result is already indicative of healthy cellular function, understanding how dietary choices continually support your body's internal environment is empowering. Your liver, a central player in metabolism, benefits immensely from a balanced and nutrient-rich diet.

Foods rich in antioxidants help protect your cells from damage, ensuring that those important ALT enzymes remain within their cellular boundaries. Think of antioxidants as tiny shields that protect your liver cells, keeping their walls strong and preventing the 'workers' (ALT) from escaping.

The World Health Organization (WHO) emphasizes the importance of a varied diet focused on whole, unprocessed foods to support overall organ health and reduce the risk of chronic conditions. Focusing on foods that promote a healthy weight and minimize inflammation can further optimize your body's internal chemistry, reinforcing the stable Alanine Aminotransferase (ALT) 25 U/L reading you've achieved.

Making conscious food choices isn't about restriction; it's about nourishing your body to sustain its impressive daily operations.

  • Choose colorful fruits and vegetables for antioxidant power.
  • Incorporate lean proteins and healthy fats, like those found in olive oil or avocados.
  • Limit processed foods, sugary drinks, and excessive alcohol to ease liver's workload.
Foods that support liver health Broccoli Cruciferous Coffee Liver-protective Fatty fish Omega-3s Nuts Vitamin E Olive Oil Healthy fats Reduce alcohol and processed foods to support liver recovery
for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.

Alanine Aminotransferase (ALT) 25 U/L in Men, Women, Elderly, and Kids

The human body is remarkably diverse, and while many biological markers can show variations based on age, sex, or other factors, an Alanine Aminotransferase (ALT) level of 25 U/L generally represents a consistent state of healthy cellular function across a wide range of individuals.

For instance, while some reference ranges might suggest slightly higher typical values for men compared to women, a 25 U/L result for either sex is commonly recognized as being well within an optimal healthy zone, indicating that the liver's metabolic factories are functioning without notable stress.

In children, ALT levels naturally tend to be a bit higher due to rapid growth and development, but a 25 U/L reading would still be considered a favorable sign, reflecting robust liver health as their bodies mature.

For the elderly, where cellular regeneration might slow down slightly, maintaining an Alanine Aminotransferase (ALT) of 25 U/L is particularly encouraging, signifying that their liver cells are effectively maintaining their integrity and metabolic efficiency despite the natural aging process.

The Centers for Disease Control and Prevention (CDC) often highlights that individual variations are normal, but a consistent, healthy reading like 25 U/L demonstrates a stable internal environment. This stability is a testament to the body's remarkable ability to adapt and maintain balance, regardless of these demographic differences, reinforcing the idea that your internal 'machinery' is well-calibrated and performing optimally at this specific measurement.

for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.

Medicine Effects on Alanine Aminotransferase (ALT) 25 U/L

Understanding the impact certain medications can have on your body's internal systems is crucial, even when your Alanine Aminotransferase (ALT) is at a healthy 25 U/L. While this level suggests your liver is functioning well, it's important to be aware that various prescription drugs and even over-the-counter supplements can influence enzyme levels.

Medications are processed by your liver, and sometimes, this processing can temporarily or, in rare cases, more significantly affect the integrity of liver cells, potentially causing a release of enzymes like ALT.

The Mayo Clinic emphasizes the importance of open communication with your healthcare provider about all medications and supplements you are taking, as they can sometimes interact with your liver's metabolic pathways.

Even common medications for pain relief or cholesterol management, while usually safe, can occasionally lead to minor, temporary shifts in liver enzyme levels in some individuals. Knowing this doesn't imply concern for your current Alanine Aminotransferase (ALT) 25 U/L, but rather fosters a deeper appreciation for how medications interact with your body's complex chemistry.

It reinforces the value of monitoring and discussing any changes in your overall health or medication regimen with a medical professional.

  • Always inform your doctor about all current medications and supplements.
  • Be aware that even common drugs can affect liver enzymes.
  • Don't stop or change medications without professional medical guidance.
for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.

When to Retest Alanine Aminotransferase (ALT) 25 U/L

When your Alanine Aminotransferase (ALT) is 25 U/L, it generally signifies a healthy baseline, and the decision to repeat this particular test will largely depend on your individual health profile and your doctor's overall assessment.

For many individuals with this healthy reading and no other concerning symptoms or risk factors, a repeat ALT measurement might typically occur as part of routine annual physical examinations. This regular check-in helps establish a consistent record of your body's internal workings and allows your healthcare provider to monitor any trends over time.

If, however, you develop new or unexplained symptoms such as unusual fatigue, yellowing of the skin or eyes (jaundice), dark urine, or unexplained abdominal discomfort, your doctor might recommend an earlier repeat test to investigate any potential changes in your liver's function.

Similarly, if your doctor identifies new risk factors, such as starting a new medication known to affect liver enzymes, or if other parts of your overall blood work show unusual patterns, a follow-up Alanine Aminotransferase (ALT) test might be advised sooner.

The American College of Gastroenterology highlights that while a single normal value is reassuring, serial measurements over time provide a more comprehensive understanding of liver health. The specific number Alanine Aminotransferase (ALT) 25 U/L, in itself, is generally not a cause for immediate concern, but it serves as an excellent point of reference for future health conversations and proactive wellness management.

for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.

Alanine Aminotransferase (ALT) 25 U/L — Frequently Asked Questions

An Alanine Aminotransferase (ALT) reading of 25 U/L is generally considered a positive indicator, suggesting that your liver cells are largely intact and functioning effectively. It means the enzyme workers are staying mostly within their cellular 'factories.' However, this single measurement is just one piece of a larger health picture.

Your doctor will consider it alongside other blood tests, your medical history, lifestyle, and any symptoms to get a comprehensive understanding of your liver health and overall well-being. It's an excellent sign of cellular integrity, but not a standalone guarantee of perfect health.

Absolutely. Even with a healthy Alanine Aminotransferase (ALT) of 25 U/L, you can always support and optimize your liver's function through consistent healthy habits. Focus on a balanced diet rich in whole foods, fruits, and vegetables, which provide essential nutrients and antioxidants.

Regular physical activity, maintaining a healthy body weight, getting adequate sleep, and managing stress are all pillars of liver wellness. These choices help ensure your liver's 'cellular machinery' continues to operate smoothly and efficiently, reinforcing that healthy 25 U/L reading.

for your numbersThe advice below assumes a number that needs fixing. At 25 it already reads normal, so read this as maintenance, not repair. Your report would flip the section rather than make you translate it.

An Alanine Aminotransferase (ALT) of 25 U/L is a very common and reassuring result for many individuals. It falls well within the typical healthy range observed in the general population across various age groups and demographics.

This particular number suggests that the natural processes within your liver cells, such as the metabolism of amino acids, are proceeding without significant disruption or cellular damage. It's often seen as an indicator of stable cellular health, reflecting the body's impressive ability to maintain internal balance.

When to See a Doctor About Alanine Aminotransferase (ALT) 25 U/L

While an Alanine Aminotransferase (ALT) level of 25 U/L is typically a reassuring sign of healthy cellular function, knowing when to consult your healthcare provider remains an essential aspect of proactive health management.

Generally, this specific reading itself does not warrant an immediate doctor's visit or concern. Instead, it forms a positive part of your overall health assessment. However, you should consider speaking with your doctor if you begin to experience new or persistent symptoms, even with an ALT of 25 U/L.

These could include unexplained fatigue that doesn't improve with rest, persistent nausea or vomiting, unusual abdominal pain, dark urine, pale stools, or a yellowish tinge to your skin or eyes (jaundice).

Such symptoms, even if subtle, could indicate that other aspects of your body's systems need attention, independent of a currently healthy ALT value. Furthermore, if you have ongoing medical conditions, are taking new medications, or have a family history of liver disease, discussing your Alanine Aminotransferase (ALT) 25 U/L result in the context of your complete medical profile during a routine check-up is always a wise approach.

The National Kidney Foundation (NKF) emphasizes that comprehensive health evaluation always considers the full clinical picture. Your doctor is the best resource to interpret all your test results and guide you on the next steps, ensuring your well-being is thoughtfully managed.

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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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