What Does AST Mean in a Blood Test?

Understanding AST

AST stands for Aspartate Transaminase. It’s an enzyme that is primarily found in the liver, but also in muscles. Depending on its level found in your bloodstream, it may be an indication of the health status of your liver or heart.

The Role of AST

AST is a key player in the metabolism of an amino acid called alanine. It aids in converting this molecule to a usable form of energy for the body. In a normal, healthy body, this enzyme is mostly contained within cells and only a small amount is found in the blood.

AST Blood Test

When an AST test is performed, it typically means that healthcare professionals want to evaluate the extent or presence of damage to the liver. The test measures the amount of the enzyme in a person’s blood. High amounts of AST in the blood may indicate that liver cells, or other cells in the body, have been damaged or are dying.

Why AST Test is Conducted?

Usually, an AST test is carried out as part of a comprehensive metabolic panel during a regular physical examination. However, you may also be advised to take this test if you exhibit symptoms suggestive of a liver disease such as jaundice, dark urine, nausea, vomiting, or abdominal pain and swelling.

Similarly, a doctor may order this test if you’ve been exposed to hepatitis virus, are a heavy drinker, have recently ingested a potential liver toxin, or are taking medicines that may harm the liver.

What Intervals of AST Indicates

The normal range of AST levels in blood are from 10 to 40 units per liter of serum. However, the normal range may slightly vary depending upon the techniques and protocols used by different laboratories.

If the AST level is higher than normal, it could suggest a condition affecting the heart, liver, or muscles – such as hepatitis, cirrhosis, a drug reaction, or heart disease. It’s important to know that high AST levels could also be due to strenuous exercise or a muscle injury.

It’s also worth noting that a singular high AST result is not necessarily alarming. Repeat tests are often performed just to determine if it’s a one-time occurrence or a persistent problem.

Conclusion

In summary, an AST blood test is a useful tool in estimating liver health. Although high AST levels may indicate a problem, they alone cannot identify or quantify the extent of liver damage. Consequently, doctors typically use AST tests alongside other diagnostic tools to have a clearer and comprehensive understanding of your liver’s condition. If you have questions or concerns about your AST levels, do discuss them with your healthcare provider to properly understand your medical needs.

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