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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
173 U/L elevated
0 from your result
mildly elevatedelevatedvery high
1normal 5 to 41330
what this means

173 is elevated for ALT, 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 132 U/L over the normal ceiling of 41. That reads elevated.

173 is elevated. That is above the normal range for ALT. 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 · Alanine Aminotransferase (ALT)

Alanine Aminotransferase (ALT) 173 U/L: Is That High?

Borderline. 173 U/L is outside 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 31, 2026

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YOUR NUMBERS

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

Values in U/L. Your Alanine Aminotransferase (ALT) of 173 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/LHIGH
U/LexampleNORMAL
U/LexampleRAISED
34 ÷ 173 =0.2AST to ALT ratio, the De Ritis ratio. Under 1 is the usual fatty-liver pattern; above 2 points at alcohol.
62 and 1730.4GGT 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) 173 U/L Low, Normal, or High?

Alanine Aminotransferase (ALT) 173 U/L might be considered a significantly elevated level when compared to typical reference ranges. While these ranges can vary slightly between laboratories and individual factors, a reading of 173 U/L generally suggests that your body's cells, particularly in the liver, could be under some form of stress or experiencing inflammation.

This kind of elevation often signals that it's time to explore the most common underlying reasons for such a change, which can range from lifestyle factors to certain medical conditions.

Understanding what this number means is the first step in taking an active role in your health journey.

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 173 U/L is a significant clinical finding, clearly indicating notable liver cell inflammation or injury. This specific reading, more than three times the upper limit of the normal range, warrants prompt investigation rather than passive monitoring.

While not typically associated with immediate acute liver failure, an ALT of 173 U/L commonly points towards underlying issues such as progressing non-alcoholic fatty liver disease (NAFLD), or liver stress induced by certain medications, including prescription drugs or even some herbal supplements.

Less commonly, early-stage acute viral hepatitis or recent significant alcohol intake could also manifest at this level. Following such a result, your healthcare provider will likely recommend additional diagnostic steps.

These often include an an abdominal ultrasound to assess the liver's structure for fat accumulation or other abnormalities, comprehensive blood tests to screen for viral hepatitis markers, and a thorough review of your medication history and lifestyle habits.

A useful detail for patients to understand is that the liver possesses remarkable regenerative capabilities; identifying and addressing the cause of this elevation *before* overt symptoms appear significantly improves the chances of preventing long-term, irreversible liver damage.

Early intervention at this stage can often lead to a full recovery or successful management of the underlying condition.

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 173 against a general adult target. What 173 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) 173 U/L

When your Alanine Aminotransferase (ALT) reaches a level like 173 U/L, it acts as a notable signal that your liver might be encountering challenges, even if you're not experiencing obvious symptoms.

This elevation can sometimes point to underlying issues that, if left unaddressed, could impact your overall well-being over time. For instance, consistent liver inflammation can sometimes contribute to changes in liver tissue.

The American Liver Foundation emphasizes the importance of investigating elevated liver enzymes to understand their cause and take appropriate steps. A persistent high Alanine Aminotransferase (ALT) value might suggest:

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 →

An Alanine Aminotransferase (ALT) level of 173 U/L, significantly exceeding the normal range of 5-40 U/L, indicates active liver inflammation or damage. This elevated value, over three times the upper limit, suggests that hepatocytes (liver cells) are releasing ALT into the bloodstream due to cellular injury.

Persistent elevation at this level raises the risk of developing chronic liver conditions such as non-alcoholic fatty liver disease (NAFLD), viral hepatitis, or autoimmune hepatitis, which can progress to fibrosis and cirrhosis if left unaddressed.

The liver's functional capacity may be compromised, potentially impacting its ability to detoxify blood, produce essential proteins, and regulate metabolism, leading to broader systemic health issues.

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.
  • Potential for ongoing liver cell stress or inflammation.
  • A need to evaluate for conditions like non-alcoholic fatty liver disease (NAFLD) or other metabolic imbalances.

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 173 U/L Mean?

To understand Alanine Aminotransferase (ALT) 173 U/L, let's think of your liver as a vital, highly efficient chemical processing plant, tirelessly working to filter your blood, produce essential proteins, and manage nutrients.

Inside the cells of this 'factory,' there are many workers, including enzymes like ALT, which help with crucial chemical reactions. Normally, these ALT workers stay inside the liver cells. However, when the cell walls of this factory are stressed, irritated, or slightly damaged, some of these ALT workers might 'leak' out into the bloodstream.

When a blood test shows Alanine Aminotransferase (ALT) at 173 U/L, it's like hearing a loud alarm bell from the factory, indicating a more significant 'leak' of these workers into the surrounding environment.

This substantial increase suggests that a notable number of liver cells are being affected, prompting a closer look into why. The Mayo Clinic points out that common reasons for such an elevation include conditions where the liver accumulates fat, certain medications, or heavy alcohol consumption.

It's a clear indicator that the liver is working harder or reacting to something, and identifying that 'something' is key to maintaining liver health.

An ALT reading of 173 U/L is most plausibly linked to moderate hepatocellular injury, often stemming from lifestyle factors or early-stage liver disease. Common culprits include non-alcoholic fatty liver disease (NAFLD), driven by obesity, insulin resistance, or metabolic syndrome, which can cause fat accumulation and inflammation in the liver.

Certain medications, including some statins, antibiotics, or over-the-counter pain relievers taken chronically, can also induce a similar elevation. Less commonly, but still possible at this level, might be early viral hepatitis infection or excessive alcohol consumption impacting liver cell integrity.

Your blood test has multiple results that affect each other. ALT 173 alone doesn't tell you the full picture. Your other markers do.

Your ALT 173 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.
The part one number cannot show
Your ALT of 173 means different things depending on its companion markers.
Your full panel shows which story is yours.
See what is driving yours →

Lifestyle Changes for Alanine Aminotransferase (ALT) 173 U/L

While dietary adjustments are crucial, many other lifestyle habits also play a significant role in managing an Alanine Aminotransferase (ALT) 173 U/L level and promoting overall liver health. Regular physical activity, for instance, is not just about staying fit; it helps in weight management, which is often linked to liver enzyme levels.

Even moderate exercise, like brisk walking for 30 minutes most days of the week, can make a difference. The Centers for Disease Control and Prevention (CDC) highlights that regular physical activity can improve metabolic health, indirectly supporting liver function.

Managing stress effectively is another often overlooked factor. Chronic stress can impact various bodily systems, including digestive and metabolic processes, which can in turn affect liver enzymes. Exploring stress-reducing activities such as meditation, yoga, or spending time in nature can be beneficial.

Additionally, ensuring adequate, restful sleep is vital for the body's repair processes. Avoiding exposure to environmental toxins and chemicals, whenever possible, also eases the liver's workload, as it is the primary organ for detoxification.

These changes, when adopted consistently, contribute to a healthier liver environment and can support better enzyme balance.

With an ALT level of 173 U/L, immediate follow-up is crucial. Schedule a repeat ALT test within two to four weeks to assess for trends; if it remains elevated, further investigations are warranted.

Discuss all current medications, supplements, and recent lifestyle changes, particularly diet and alcohol intake, with your primary care provider. They may recommend liver function panel, viral hepatitis serologies, and an abdominal ultrasound.

Consider reducing intake of processed foods, sugary drinks, and saturated fats, and aim for regular physical activity. Depending on the findings, referral to a gastroenterologist or hepatologist may be necessary for specialized management.

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.
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.

Diet Changes for Alanine Aminotransferase (ALT) 173 U/L

The food choices you make have a profound impact on your liver's health, and dietary adjustments can be a powerful tool when addressing an Alanine Aminotransferase (ALT) 173 U/L result.

A diet focused on nutrient-dense, whole foods can significantly reduce the burden on your liver and help it function more efficiently. Shifting away from highly processed items, sugary beverages, and unhealthy fats found in many fast foods is often a recommended starting point.

The National Institutes of Health (NIH) often emphasizes a balanced eating pattern rich in fruits, vegetables, and lean proteins for overall health, which directly benefits liver function. Consider making these dietary shifts to support your liver:

  • **Embrace colorful produce:** Aim for a wide variety of fruits and vegetables, which are packed with antioxidants and fiber.
  • **Choose whole grains:** Opt for foods like oats, brown rice, and whole-wheat bread over refined grains.
  • **Focus on lean proteins:** Include sources like chicken, fish, beans, and lentils.
  • **Incorporate healthy fats:** Found in avocados, nuts, seeds, and olive oil.
  • **Limit added sugars and refined carbohydrates:** These can contribute to fat accumulation in the liver.
  • **Reduce alcohol intake:** Even moderate amounts can stress the liver, and for an elevated ALT, minimizing or eliminating alcohol is often suggested.
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 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.

Alanine Aminotransferase (ALT) 173 U/L in Men, Women, Elderly, and Kids

While an Alanine Aminotransferase (ALT) 173 U/L is a significant elevation for almost everyone, certain demographic groups might experience or react to this reading differently. For adult men, typical reference ranges can sometimes be slightly higher than for women, partly due to greater muscle mass, but 173 U/L still represents a notable increase that warrants attention.

In women, hormonal factors and conditions such as pregnancy can influence liver enzyme levels, though pregnancy-related ALT elevations usually have specific causes. The American College of Obstetricians and Gynecologists (ACOG) provides guidance on liver function during pregnancy.

In the elderly population, an elevated ALT might be influenced by the presence of multiple chronic conditions or the use of several medications, which the liver must process. For children and adolescents, any elevation in ALT, especially to a level like 173 U/L, is generally considered more serious and prompts a thorough investigation by a pediatric specialist, as the causes can be different and less common than in adults.

Regardless of age or sex, an Alanine Aminotransferase (ALT) 173 U/L indicates the need for careful evaluation and personalized guidance from a healthcare professional to understand the specific context and appropriate next steps.

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.

Medicine Effects on Alanine Aminotransferase (ALT) 173 U/L

Many medications, both those prescribed by a doctor and those available over-the-counter, have the potential to influence liver enzyme levels, including Alanine Aminotransferase (ALT). When your Alanine Aminotransferase (ALT) is 173 U/L, it's especially important to consider all substances you are taking, as they could be contributing factors.

The liver plays a central role in metabolizing drugs, and sometimes this process can lead to liver stress or mild inflammation, causing ALT to rise. Common examples include certain pain relievers, some antibiotics, cholesterol-lowering medications, and even herbal supplements.

The National Institutes of Health (NIH) emphasizes that drug-induced liver injury can manifest in various ways, including elevated liver enzymes. A comprehensive review of all current medications and supplements with your healthcare provider is often a crucial step in understanding the cause of an elevated ALT. Key considerations regarding medicine effects include:

  • **Reviewing all prescriptions:** Discuss every medication you are currently taking with your doctor.
  • **Considering over-the-counter drugs:** Even common pain relievers can impact liver enzymes if used excessively.
  • **Evaluating herbal remedies and supplements:** Many natural products can affect the liver and should be disclosed to your physician.
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.

When to Retest Alanine Aminotransferase (ALT) 173 U/L

When faced with an Alanine Aminotransferase (ALT) 173 U/L reading, repeating the test is a common and often necessary next step. This is particularly true for a significantly elevated value, as a single reading might sometimes be influenced by temporary factors or variations.

A repeat test helps your healthcare provider confirm the elevation, assess whether the level is stable, increasing, or decreasing, and evaluate the effectiveness of any lifestyle changes or treatments initiated.

The timing for a repeat test is usually determined by your doctor, taking into account the initial reading, your overall health status, and any other symptoms you might be experiencing.

For instance, if the initial elevation is believed to be due to a transient factor, a repeat test might be suggested sooner. If a more persistent underlying condition is suspected, the repeat test might be part of a broader diagnostic process, potentially including other lab markers or imaging studies.

This structured approach ensures that any trends are accurately monitored, helping to guide the most appropriate management plan for your specific situation.

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.

Alanine Aminotransferase (ALT) 173 U/L — Frequently Asked Questions

An Alanine Aminotransferase (ALT) 173 U/L reading commonly points to potential liver cell stress or inflammation. Very frequent causes include non-alcoholic fatty liver disease (NAFLD), which is often linked to obesity and metabolic syndrome, or excessive alcohol consumption.

Certain medications, both prescription and over-the-counter, can also lead to such an elevation. Less commonly, viral infections like hepatitis, autoimmune conditions, or other liver diseases could be at play. Your doctor will consider your full health picture to help pinpoint the specific reason.

For many individuals, lifestyle changes can indeed significantly help reduce an Alanine Aminotransferase (ALT) 173 U/L level, especially if the cause is related to fatty liver disease, diet, or alcohol.

Embracing a balanced diet rich in whole foods, getting regular physical activity, managing your weight, and limiting or avoiding alcohol are powerful strategies. However, given that 173 U/L is a notable elevation, it's important to consult with a healthcare professional.

They can help confirm the cause, monitor your progress, and ensure your lifestyle adjustments are appropriate for your specific needs.

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.

An Alanine Aminotransferase (ALT) 173 U/L indicates that liver cells are under stress or experiencing inflammation, causing the enzyme to leak into the bloodstream. While it signals a need for investigation, it doesn't automatically mean there is irreversible or severe liver damage.

It's more like a 'warning light' that tells your doctor to look deeper. The exact meaning depends on the underlying cause, how long the elevation has been present, and other factors. Early detection and addressing the root cause are crucial for maintaining liver health.

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.

When to See a Doctor About Alanine Aminotransferase (ALT) 173 U/L

When your Alanine Aminotransferase (ALT) result is 173 U/L, it's a clear indication that scheduling a conversation with your healthcare provider is a very important next step. This elevated level, while not immediately alarming, does signal that your liver may be under significant stress and warrants a thorough medical evaluation.

Your doctor can help you understand this specific Alanine Aminotransferase (ALT) 173 U/L reading within the context of your complete health history, lifestyle, and any other test results. They will likely discuss potential causes, such as diet, medication, alcohol intake, or underlying health conditions.

This consultation is crucial for developing a personalized plan, which might include further diagnostic tests, specific lifestyle recommendations, or other interventions. Taking this proactive step empowers you to work with your medical team to explore the cause and protect your liver health effectively.

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