You should follow with your doctor. Usually, the cause can be identified with history and laboratory studies. A liver biopsy is occasionally necessary for diagnosis and sometimes for assessing if there has been any liver damage.
The list includes autoimmune disorders such as autoimmune hepatitis, medications including herbal remedies, inflammatory conditions such as certain rheumatologic/immunologic conditions and celiac sprue, metabolic disorders including fatty liver with dislipidemia, hemochromatosis, etc. to name a few. The complete list is substantially longer.
I certainly would not recommend ignoring your ALT abnormality. Chronic elevation of ALT may be a sign of a disease process that after years or decades would lead to liver cirrhosis and end-stage liver disease/liver failure and its associated complications.
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it means that the score is above the mean
Yes.z = (raw score - mean)/standard error.Since the standard error is positive, z < 0 => (raw score - mean) < 0 => raw score < mean.
z score = (test score - mean score)/SD z score = (87-81.1)/11.06z score = 5.9/11.06z score = .533You can use a z-score chart to calculate the probability from there.
Assuming you mean using only positive whole numbers: 1 x 61 (only as 61 is a prime number)
z-score of a value=(that value minus the mean)/(standard deviation). So a z-score of -1.5 means that a value is 1.5 standard deviations below the mean.