What does it mean if your ALT is high?
High levels of ALT in your blood can be due to damage or injury to the cells in your liver. An increased ALT level may indicate the following conditions: Alcohol-induced liver injury. Fatty liver disease (too much fat in your liver).
What ALT level is considered high? The upper limit of normal for ALT is 55 IU/L. When an ALT level is double to triple the upper limit of normal, it is considered mildly elevated. Severely elevated ALT levels found in liver disease are often 50 times the upper limit of normal.
Normal Results
The normal range is 4 to 36 U/L. Normal value ranges may vary slightly among different laboratories. Some labs use different measurements or may test different samples. Talk to your health care provider about the meaning of your specific test results.
People can lower their ALT levels by making lifestyle changes, such as taking regular exercise and changing their diet. Increasing fiber intake, reducing saturated fats and processed foods, as well as consuming a range of nutrients from fruits and vegetables may all help to lower levels.
Drink coffee. Several studies have found that coffee may have a protective effect on the liver and that drinking it can lower liver enzymes. A 2017 review found that drinking anywhere from 1 to 4 cups of coffee per day can help lower ALT levels and reduce the risk of liver disease and cancer.
An ALT test result of >100 IU/l is a clear indicator of serious liver disease, but a mildly elevated ALT result (30–100 IU/l) is often ascribed to the use of medication (for example statins) or alcohol, obesity, or, for lower ALT levels (<50 IU/l), considered as part of the normal distribution of test results.
Sometimes, factors such as hormonal changes or reactions to medications can cause temporarily elevated liver enzyme levels. Elevated levels caused by these factors will generally return to normal in about 2 to 4 weeks without treatment.
Stress impacts the part of the brain that controls the liver; it also impacts blood flow to the liver. In peoplewith persistent condition of Hepatitis B, there is a relation between depression and ALT (alanine aminotransferase) levels that indicate whether you have a liver disease or injury.
Persistent mild elevation of ALT and AST in asymptomatic persons should be followed up and if the levels go above 2 times the normal range, further evaluation is necessary.
Over-the-counter pain medications, particularly acetaminophen (Tylenol, others) Certain prescription medications, including statin drugs used to control cholesterol. Drinking alcohol.
Is a higher or lower ALT better?
ALT blood levels are a marker of liver health: low levels typically indicate a healthy liver, while high levels suggest liver damage [3].
Overall health improvement is seen in a person who exercises regularly, which means doing regular cardiovascular or aerobic exercise can improve health and reduce ALT levels. Studies indicated that a minimum of 150 minutes of regular activity per week can improve liver enzymes, such as ALT, in an adult.

- Maintain a healthy weight. ...
- Eat a balanced diet. ...
- Exercise regularly. ...
- Avoid toxins. ...
- Use alcohol responsibly. ...
- Avoid the use of illicit drugs. ...
- Avoid contaminated needles. ...
- Get medical care if you're exposed to blood.
Can Stress Cause Elevated Liver Enzymes? Stress and anxiety are proven to contribute to high liver enzyme levels since they can reduce blood flow to the liver.
- Abdominal swelling (ascites)
- Enlarged blood vessels just beneath the skin's surface.
- Enlarged spleen.
- Red palms.
- Yellowing of the skin and eyes (jaundice)
French fries, wafers, burgers, and pizzas do no good to your liver. These food items are high in saturated fat or trans-fat content and are difficult to digest. In other words, your liver needs to work hard to process these food items.
ALT activity, in men, correlated with higher mortality from all causes and liver disease. As expected, the effect of ALT was much larger on liver-specific mortality. For example, compared to those with ALT < 20 U/L, men with ALT ≥ 100 U/L had 59 times the risk of death from liver disease.
The alanine aminotransferase (ALT) is a specific marker for liver inflammation and is typically elevated in individuals with a fatty liver. If your ALT test results are elevated, your doctor may order additional blood tests to check for other conditions including viral hepatitis.
If they are constantly in the 50 to 200 range we term the hepatitis B infection active. ALT's range from 0 up to 3000 or so in many acute hepatitis cases. They change with every meal so it is important not to panic if they go from 20 to 45 after a few months. All scores below 45 indicate a perfectly healthy score.
A high Mayo Risk Score, and an AST:ALT ratio of >1.12 have been shown to be indicators of risk for the development of oesophageal varices. In PSC, as with other liver diseases, there are suggestions that an AST:ALT ratio of >1 indicates the development of cirrhosis.
What causes ALT levels to go up and down?
ALT is most commonly increased in response to liver disease or liver damage, caused by alcohol, drugs, supplements, or toxins. Other causes of high ALT include obesity, anorexia, biliary disease, muscle damage and disease, heart attack, hypothyroidism, and infections and diseases that can impair liver function.
In healthy individuals, ALT levels can vary 10 to 30% from one day to the next. ALT levels can fluctuate 45% during a single day, with highest levels occurring in the afternoon and lowest levels at night. A high body mass index can increase ALT levels by 40 to 50%. Reference range is 14 - 63 IU/L.
The liver, however, is able to replace damaged tissue with new cells. If up to 50 to 60 percent of the liver cells may be killed within three to four days in an extreme case like a Tylenol overdose, the liver will repair completely after 30 days if no complications arise.
- Skin and eyes that appear yellowish (jaundice)
- Abdominal pain and swelling.
- Swelling in the legs and ankles.
- Itchy skin.
- Dark urine color.
- Pale stool color.
- Chronic fatigue.
- Nausea or vomiting.
Pain in your liver itself can feel like a dull throbbing pain or a stabbing sensation in your right upper abdomen just under your ribs. General abdominal pain and discomfort can also be related to swelling from fluid retention and enlargement of your spleen and liver caused by cirrhosis.
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AST/ALT ratio | |
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LOINC | 16325-3, 1916-6 |
Both aminotransferases are highly concentrated in the liver. AST is also diffusely represented in the heart, skeletal muscle, kidneys, brain and red blood cells, and ALT has low concentrations in skeletal muscle and kidney;21 an increase in ALT serum levels is, therefore, more specific for liver damage.
10–40 IU/L. High. >36 U/L. >1,000 U/L are very high levels and may be a sign of liver injury or hepatitis. >40 IU/L which may be a sign of liver inflammation.
High levels of ALT can be a result of damage or injury to cells. Because ALT is most concentrated in the liver, abnormal ALT test results are generally associated with conditions affecting the liver, such as inflammation (hepatitis) and scarring (cirrhosis).
Avoid certain supplements: Excess iron, niacin, and vitamin A (the retinol form, not beta carotene) tend to stress an unhealthy liver.
What foods to avoid if you have high liver enzymes?
- Alcohol. Alcohol can be a major cause of fatty liver disease as well as other liver diseases.
- Added sugar. Stay away from sugary foods such as candy, cookies, sodas, and fruit juices. ...
- Fried foods. These are high in fat and calories.
- Added salt. ...
- White bread, rice, and pasta. ...
- Red meat.
Elevated liver enzymes might be discovered during routine blood testing. In most cases, liver enzyme levels are only mildly and temporarily elevated.
The normal range is around 7-35 U/L in women and 7-40 U/L in men. There may be some lab-to-lab variability in ranges due to differences in equipment, techniques, and chemicals used. ALT levels typically do not change much during pregnancy.
In healthy individuals, ALT levels can vary 10 to 30% from one day to the next. ALT levels can fluctuate 45% during a single day, with highest levels occurring in the afternoon and lowest levels at night. A high body mass index can increase ALT levels by 40 to 50%. Reference range is 14 - 63 IU/L.
Discussion. In present study, we assessed the extent of elevated liver enzymes; AST and ALT, in severely dehydrated children with AGE. Most of the patients (60, 43.5%) showed temporary isolated AST elevation along with normal ALT level. Concurrent elevated AST/ALT was observed in 22 (15.9%) children.
In general, high levels of ALT may be a sign of liver damage from hepatitis, infection, cirrhosis, liver cancer, or other liver diseases. The damage may also be from a lack of blood flow to the liver or certain medicines or poisons.
However, patients with nonalcoholic fatty liver disease may have normal transaminase levels. The ratio of AST/ALT usually is less than 1 (in alcoholic liver disease, this ratio typically will be greater than 2) but may increase as the severity of the liver damage increases.