What is a liver function test?

A liver function test is a blood test in which the blood is examined in a laboratory to check for liver damage and the overall health of the liver. The levels of certain substances in the blood can help show if the liver is working properly.

What does the liver do?

The liver’s functions include:

  • Filtering blood from the digestive tract
  • Storing energy
  • Processing waste products
  • Removing poisons
  • Producing proteins that help blood clot
  • Producing glucose (blood sugar)
  • Aiding in digestion

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