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Aspartate Aminotransferase (AST)mg/dL
Alanine Aminotransferase (ALT)mg/dL
Alkaline Phosphatase (ALP)mg/dL
291 U/L elevated
0 from your result
mildly elevatedelevatedvery high
1normal under 46500
what this means

291 is elevated for GGT, 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 245 U/L over the normal ceiling of 46. That reads elevated.

291 is elevated. That is above the normal range for GGT. 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 · Gamma-Glutamyl Transferase (GGT)

Gamma-Glutamyl Transferase (GGT) 291 U/L: Is That High?

Borderline. 291 U/L is outside the normal range for GGT.

But a number alone is only half the story. Your Aspartate Aminotransferase (AST), Alanine Aminotransferase (ALT) 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: <48
Raised: 48-119
High: 120+

Values in U/L. Your Gamma-Glutamyl Transferase (GGT) of 291 is marked.

What they say together.

Gamma-Glutamyl Transferase (GGT) 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/LexampleNORMAL
34 ÷ 38 =0.9AST to ALT ratio, the De Ritis ratio. Under 1 is the usual fatty-liver pattern; above 2 points at alcohol.
291 and 387.7GGT 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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Every marker on your test, read against your age and sex. Free.

Is Gamma-Glutamyl Transferase (GGT) 291 U/L Low, Normal, or High?

Gamma-Glutamyl Transferase (GGT) 291 U/L indicates an enzyme level that might be considered significantly higher than typical healthy ranges. Healthy adult GGT levels usually fall well below this number, often in the range of 0 to 60 U/L, though specific ranges can vary slightly by laboratory.

This elevated GGT result suggests your liver is likely working harder or responding to a particular stimulus. Understanding what contributes to such a GGT level is a valuable step in understanding your health picture.

what this page cannot tell you

Hemoglobin levels combined with this marker can reveal underlying conditions that neither value shows on its own

This page has not been given your Hemoglobin, so that half of the picture is missing here. It is describing the average reader with Gamma-Glutamyl Transferase (GGT), not you.

Read mine against my Hemoglobin →

A GGT level of 291 U/L, significantly exceeding the normal range of 0-45 U/L, clinically signals substantial and active liver stress or damage, particularly implicating the bile ducts or indicating significant hepatobiliary insult.

This magnitude of elevation is a strong indicator of an ongoing process requiring prompt medical evaluation. At this pronounced level, specific likely causes include significant chronic alcohol intake, which can elevate GGT even in the absence of overt symptoms, or cholestasis – an impairment of bile flow from the liver.

Cholestasis might stem from conditions like gallstones, bile duct obstruction, or certain inflammatory liver diseases. While some medications can raise GGT, an elevation to 291 U/L often points to a more pronounced underlying pathology.

To identify the exact cause, clinicians will typically order a comprehensive liver panel (AST, ALT, alkaline phosphatase, bilirubin) and imaging studies such as an abdominal ultrasound or MRI to visualize the bile ducts and liver structure for obstructions.

A detailed medical history, focusing on alcohol use, medications, and symptoms, is also crucial. Patients should understand that while this GGT value is concerning, it serves as a sensitive but non-specific alert.

The honest truth is that GGT levels, especially when linked to treatable causes like lifestyle factors, can often decrease substantially with appropriate intervention and treatment once the specific underlying issue is identified, highlighting the liver's potential for recovery.

The liver and Gamma-Glutamyl Transferase (GGT) LIVER Produces Gamma-Glutamyl Transferase (GGT) Blood supply Bile output Elevated Gamma-Glutamyl Transferase (GGT) may indicate liver cell damage or stress
for your numbersThe section below is written for 291 against a general adult target. What 291 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 Gamma-Glutamyl Transferase (GGT) 291 U/L

When Gamma-Glutamyl Transferase (GGT) is 291 U/L, it’s a strong signal that merits attention, as significantly elevated GGT levels can be linked to several health considerations, especially those involving the liver.

While GGT is not a diagnostic tool on its own, a reading at this level often points toward ongoing stress or irritation within the liver, or perhaps issues with the bile ducts.

This can range from common conditions like non-alcoholic fatty liver disease (NAFLD), which affects a substantial portion of the population, to the impact of certain medications or consistent alcohol consumption.

Persistently high GGT can also be associated with metabolic syndrome, a cluster of conditions that includes high blood pressure, high blood sugar, and excess body fat around the waist, which collectively increase the risk of heart disease, stroke, and type 2 diabetes.

Ignoring a GGT 291 U/L might mean missing an opportunity to address these potential underlying causes early. The National Institutes of Health (NIH) emphasizes the importance of understanding liver enzyme levels for overall health awareness.

It's a prompt to explore potential factors influencing your liver health, guiding discussions with your healthcare provider about next steps. This particular GGT level serves as an indicator that the liver's normal functioning might be challenged, urging a closer look into your diet, lifestyle, and medication history.

what this page cannot tell you

Kidney function reflected by creatinine affects how this marker is processed and what your levels actually mean

This page has not been given your Creatinine, so that half of the picture is missing here. It is describing the average reader with Gamma-Glutamyl Transferase (GGT), not you.

Read mine against my Creatinine →

A Gamma-Glutamyl Transferase (GGT) level of 291 U/L signifies a substantial burden on liver function and indicates potential damage that increases the risk for more serious conditions. At this significantly elevated level, the liver is actively struggling, which can precipitate or exacerbate non-alcoholic fatty liver disease (NAFLD) progression to more severe stages like fibrosis or cirrhosis.

This heightened GGT also points towards potential bile duct issues, such as cholestasis, where bile flow is obstructed, leading to the buildup of toxins and further liver cell injury. Furthermore, chronically high GGT values are increasingly recognized as an independent risk factor for cardiovascular disease, suggesting systemic inflammation and oxidative stress originating from the liver are impacting the entire circulatory system.

for your numbersThe risk below is the average one for this GGT. 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.

This part is about the number

Everything below explains what raises Gamma-Glutamyl Transferase (GGT). 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 Gamma-Glutamyl Transferase (GGT) Level of 291 U/L Mean?

The Gamma-Glutamyl Transferase (GGT) 291 U/L reading is like a diligent smoke detector sounding a clear alarm. GGT itself is an enzyme found in many parts of the body, but it is especially concentrated in the liver.

When liver cells are stressed or damaged, or when the flow of bile (a digestive fluid produced by the liver) is obstructed, GGT can leak into the bloodstream, leading to higher levels.

At 291 U/L, this signal is particularly strong, pointing to a more significant degree of liver activity or challenge compared to a slightly elevated reading. One of the most common reasons for GGT to be at this level is the influence of certain lifestyle choices, such as regular consumption of alcohol.

Even beyond direct alcohol impact, conditions like non-alcoholic fatty liver disease (NAFLD), which is often linked to obesity, insulin resistance, and an unhealthy diet, can also lead to GGT levels in this range.

The American Liver Foundation points out that NAFLD is becoming increasingly common and can sometimes progress to more severe forms of liver disease if not addressed. Certain medications, both prescription and over-the-counter, can also affect GGT levels as the liver processes them.

This specific GGT 291 U/L value doesn't tell you the exact cause, but it strongly suggests that the liver is actively involved in processing or responding to something in the body, and it's a valuable piece of information for your healthcare provider to consider when looking at your overall health profile.

A GGT reading of 291 U/L strongly suggests exposure to substances that induce liver enzyme activity or cause direct liver cell damage. Among the most probable culprits are heavy alcohol consumption or regular use of certain medications known to affect liver enzymes, such as anticonvulsants (e.g., phenytoin, carbamazepine) or some antibiotics.

Non-alcoholic fatty liver disease (NAFLD), particularly its inflammatory form (NASH), is also a very common cause for this degree of elevation, often linked to obesity, diabetes, and metabolic syndrome. Less commonly, but still plausible, could be bile duct obstruction from gallstones or primary biliary cholangitis, which would cause GGT to rise substantially.

Your GGT 291 means different things depending on your other markers

GGT + Hemoglobin
Hemoglobin levels combined with this marker can reveal underlying conditions that neither value shows on its own
GGT + Creatinine
Kidney function reflected by creatinine affects how this marker is processed and what your levels actually mean
GGT + Fasting Blood Glucose
Blood sugar status interacts with this marker in ways that change the clinical significance of your result
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The part one number cannot show
Your GGT of 291 means different things depending on its companion markers.
Your full panel shows which story is yours.
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Lifestyle Changes for Gamma-Glutamyl Transferase (GGT) 291 U/L

While diet plays a significant role in liver health, other lifestyle changes are equally important, especially when your Gamma-Glutamyl Transferase (GGT) is 291 U/L. Regular physical activity, for instance, can be remarkably beneficial.

Engaging in moderate exercise most days of the week, such as brisk walking, swimming, or cycling, can help manage weight, improve insulin sensitivity, and reduce fat accumulation in the liver.

Even at this elevated GGT 291 U/L, consistent physical activity can contribute positively to your liver's well-being. Additionally, managing stress effectively is crucial, as chronic stress can have systemic effects on the body, including metabolic pathways that influence liver function.

Practices like mindfulness meditation, yoga, spending time in nature, or engaging in hobbies can help lower stress levels. Ensuring adequate sleep, typically 7-9 hours per night for adults, also supports overall bodily repair and regulation, which indirectly benefits liver function.

Furthermore, avoiding exposure to environmental toxins, where possible, can lighten the liver's workload. This includes limiting exposure to industrial chemicals, certain cleaning products, and air pollution. The Mayo Clinic often highlights the holistic approach to health, emphasizing that interconnected lifestyle factors contribute significantly to managing conditions that might lead to elevated enzyme markers like GGT.

These non-dietary adjustments complement any dietary changes and offer a comprehensive strategy for supporting your liver and overall health when facing a GGT of 291 U/L.

With a GGT level of 291 U/L, immediate medical attention is necessary for diagnosis and management. Schedule a follow-up appointment with your primary care physician or a gastroenterologist promptly. You will likely require further liver function tests, including ALT, AST, alkaline phosphatase, and bilirubin, along with imaging studies like an abdominal ultrasound to visualize the liver and bile ducts.

Lifestyle modifications are crucial: cease alcohol consumption entirely if applicable, and adopt a balanced, low-fat diet, focusing on whole foods and reducing sugar intake. Weight loss, if overweight or obese, is paramount. Track your symptoms, including any abdominal pain, fatigue, or jaundice.

for your numbersThis section lists every reason GGT 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 Gamma-Glutamyl Transferase (GGT) 291 U/L

When Gamma-Glutamyl Transferase (GGT) is 291 U/L, dietary adjustments often become a primary focus, particularly in addressing common causes like non-alcoholic fatty liver disease (NAFLD) or alcohol-related liver changes. A key strategy is to reduce or eliminate alcohol intake, as alcohol is a major driver of GGT elevation.

Shifting to a more balanced, whole-foods-based eating pattern can significantly support liver health. This typically involves emphasizing fruits, vegetables, whole grains, and lean proteins, while limiting processed foods, added sugars, and unhealthy fats.

The World Health Organization (WHO) consistently advocates for such healthy dietary patterns to prevent chronic diseases, many of which can impact liver health. For a GGT 291 U/L, specific attention to saturated and trans fats, found in many fast foods and packaged snacks, should be considered, as these can contribute to fat accumulation in the liver.

Hydration is also important; choosing water over sugary beverages helps reduce the liver's processing burden. These dietary choices, alongside lifestyle modifications, create a supportive environment for your liver to function optimally.

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.

Gamma-Glutamyl Transferase (GGT) 291 U/L in Men, Women, Elderly, and Kids

Gamma-Glutamyl Transferase (GGT) levels, including a reading like 291 U/L, can be influenced by various demographic factors, though this specific value is notably high for almost any group. Generally, men tend to have slightly higher GGT levels than women, which is often considered a normal physiological difference.

However, a GGT of 291 U/L would be a significant elevation for both men and women, prompting similar considerations for investigation. In the elderly population, GGT levels can sometimes be influenced by a higher prevalence of chronic health conditions or the use of multiple medications, both of which can impact liver enzyme activity.

While a GGT of 291 U/L in an older individual might be seen in the context of their broader health profile, it still represents a substantial elevation that warrants thorough review.

For children, a GGT level of 291 U/L is highly unusual and would be a cause for immediate medical investigation, as such an elevation in younger individuals typically points to more specific or serious underlying conditions.

The Centers for Disease Control and Prevention (CDC) provides data on health trends across different age groups and sexes, highlighting how various health markers can present differently. Regardless of age or gender, a Gamma-Glutamyl Transferase (GGT) 291 U/L indicates a strong signal that warrants a comprehensive discussion with a healthcare provider to understand the specific context and potential causes in that individual.

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 Gamma-Glutamyl Transferase (GGT) 291 U/L

Many medications, both prescription and over-the-counter, have the potential to influence liver enzymes, including Gamma-Glutamyl Transferase (GGT). When your GGT is 291 U/L, a review of all medications you are currently taking, including herbal supplements and vitamins, becomes a crucial step.

Some common culprits include certain anticonvulsants used for epilepsy, such as phenytoin or carbamazepine, as well as some statins prescribed for high cholesterol. Even seemingly harmless over-the-counter pain relievers, when taken in excess or over extended periods, can sometimes elevate GGT.

The American Liver Foundation provides extensive information on drug-induced liver injury, emphasizing that the liver processes most substances entering the body, making it susceptible to medication-related effects. It is vital to remember that you should never stop or change any prescribed medication without first consulting your doctor, even if you suspect it might be contributing to your GGT 291 U/L.

Your healthcare provider can assess the necessity of your current medications versus their potential impact on your liver health, perhaps by adjusting dosages or exploring alternative treatments. It is also important to disclose any supplements you are taking, as some herbal remedies can interact with medications or directly affect liver function, leading to a higher GGT level.

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 Gamma-Glutamyl Transferase (GGT) 291 U/L

After receiving a Gamma-Glutamyl Transferase (GGT) 291 U/L result, the timing for a repeat test is a decision best made in consultation with your healthcare provider. Given that this level is significantly elevated, it is typically not viewed as a one-time isolated finding but rather as an indicator that may require follow-up.

The exact timing for a re-test will depend on the suspected underlying cause, any implemented lifestyle changes, and the overall clinical picture. For example, if lifestyle modifications, such as reducing alcohol intake or making significant dietary adjustments, are initiated, your doctor might suggest retesting in a few weeks to a few months to observe the impact.

This allows sufficient time for the liver to respond and for GGT levels to potentially decrease. If a medication is identified as a potential contributor, your doctor might adjust the medication or monitor GGT more closely.

The goal of repeating the test is to track the trend of your GGT 291 U/L, to see if it is decreasing, remaining stable, or continuing to rise, which helps inform further diagnostic steps or treatment adjustments.

Remember, monitoring your GGT level over time provides valuable insights into how your liver is responding to interventions and helps ensure your ongoing 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.

Gamma-Glutamyl Transferase (GGT) 291 U/L — Frequently Asked Questions

A Gamma-Glutamyl Transferase (GGT) of 291 U/L indicates a notable elevation, suggesting your liver is under stress or actively involved in processing something. While it's a strong indicator that warrants investigation, it doesn't automatically mean severe, irreversible liver damage.

It's more of a sensitive 'early warning' signal that the liver is reacting. Common reasons for such a high GGT include heavy alcohol consumption, non-alcoholic fatty liver disease (NAFLD), or the effects of certain medications.

Further evaluation by a healthcare provider, often with other liver function tests and imaging, is necessary to determine the specific cause and the extent of any liver involvement.

When Gamma-Glutamyl Transferase (GGT) is 291 U/L, some lifestyle adjustments can be particularly impactful. Eliminating or significantly reducing alcohol intake is often the most critical step, as alcohol is a frequent cause of such high GGT levels.

Adopting a balanced diet that is low in processed foods, added sugars, and unhealthy fats, while rich in fruits, vegetables, and whole grains, can help address conditions like non-alcoholic fatty liver disease.

Regular physical activity, managing body weight, and prioritizing adequate sleep also contribute significantly to overall liver health and can help bring elevated GGT levels down. Consulting with a healthcare professional can help you tailor these changes to your individual 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.

Yes, common dietary habits can certainly contribute to a Gamma-Glutamyl Transferase (GGT) result of 291 U/L. Consistent intake of high amounts of alcohol is a very common dietary factor. Additionally, a diet rich in refined carbohydrates, sugary drinks, and unhealthy fats, often found in highly processed foods and fast food, can lead to conditions like non-alcoholic fatty liver disease (NAFLD).

NAFLD is a prevalent condition that can significantly elevate GGT levels. These dietary patterns place an increased workload on the liver, potentially causing the release of GGT into the bloodstream.

Making conscious, healthier food choices can play a vital role in supporting your liver and positively influencing a high GGT reading.

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 Gamma-Glutamyl Transferase (GGT) 291 U/L

Discovering that your Gamma-Glutamyl Transferase (GGT) is 291 U/L is a significant finding that warrants prompt discussion with your healthcare provider. This level is considerably higher than typical healthy ranges and suggests an active process affecting your liver or bile ducts.

While this informational content aims to spark your curiosity and empower you with knowledge, it cannot replace professional medical guidance. It is crucial to schedule an appointment with your doctor to review your results in the context of your full medical history, current medications, and lifestyle.

Your doctor may recommend additional tests, such as other liver function tests or imaging studies, to help pinpoint the cause of this elevated GGT. Pay attention to any accompanying symptoms you might be experiencing, such as unusual fatigue, unexplained weight loss, abdominal discomfort, yellowing of the skin or eyes (jaundice), or dark urine, and be sure to share these with your doctor.

Understanding your GGT 291 U/L result is an important step in maintaining your well-being, and your healthcare team is your best resource for personalized advice and care.

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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.

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