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GGT Test


  • The Gamma glutamyl transpeptidase lab test measures an enzyme in blood to spot liver or bile duct damage.
  • Draw Locations
  • Turnaround Time: 2-4 Business Days on Average. Time may vary.
  • Availability: Allowed if address and testing are outside NY, NJ, MA, RI
  • HSA and FSA Approved

$29.00 USD $273.84

✅ 100% interest free financing + no late fees
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Ordering the GGT Test

Ordering a GGT test can help assess liver function by measuring the level of gamma-glutamyl transpeptidase in your blood. This test is often used to detect liver damage or disease. Interestingly, GGT levels can also be elevated due to alcohol consumption, making it a useful tool for monitoring alcohol-related liver issues.

When ordering the GGT test, consider these specific benefits:

  • Helps identify liver damage early.
  • Monitors liver function over time.
  • Assists in diagnosing bile duct issues.
  • Evaluates the effectiveness of treatment for liver conditions.
  • Provides insight into alcohol-related liver damage.

Who Should Consider the Test

People experiencing persistent fatigue or unexplained nausea might find the GGT test beneficial. For example, someone who has been feeling unusually tired and has a family history of liver disease may want to consider this test to check their liver health.

Ordering the test may also be relevant in these scenarios:

  • Experiencing frequent abdominal pain.
  • Having a history of alcohol use.
  • Undergoing treatment for liver disease.
  • Experiencing jaundice or yellowing of the skin.
  • Having unexplained weight loss, which can sometimes be linked to liver issues.

Testing can help detect liver damage, allowing for timely intervention and management. Delaying the test might result in missing early signs of liver issues, which could affect treatment outcomes.

Preparing for the Test

Fasting for 10-12 hours is required before the GGT test. It’s important to follow any instructions from your healthcare provider to ensure the test results are as accurate as possible.

Labs Included When Ordering Your GGT Test

Test Name Reference Range Significance Low and High Levels of GGT
Gamma-Glutamyl Transpeptidase (GGT liver test) 9-48 GGT is an enzyme found in the liver. It helps in the transfer of amino acids and peptides across the cellular membrane. High levels mean potential liver damage or bile duct issues.

Low levels mean generally not a concern.

Reference ranges may differ. Visit the Quest Diagnostics lab test directory for the latest values.


GGT Test FAQ

Is there GGT testing near me?

To find nearby locations for GGT testing, use the patient service center locator. This is especially helpful if you need a convenient site for sample collection due to liver-related concerns.

What is the cost of the test?

The cost of the GGT test includes all fees, such as sample collection at patient service centers. It’s worth ordering to monitor liver function, especially if you have a history of liver issues.

How often should I retest?

Retesting every 6-12 months is advisable if you are monitoring liver function or have ongoing liver conditions. Regular testing helps track changes in liver health over time.

How accurate is the test?

The GGT test uses enzymatic methods to measure gamma-glutamyl transpeptidase levels, ensuring precise results. TrueHealthLabs.com partners with CLIA-certified laboratories to uphold rigorous testing standards for dependable results.


Medical Review Board

Reviewed by Jeff Donohue M.D. from Body Logic and Brady Hurst DC, CCCN. Written by True Health Lab’s team of editorial health contributors.

Disclaimer: This information is for educational purposes only and not intended as medical advice. Consult your healthcare provider for personalized guidance.


Why Customers Trust True Health Labs – What People are saying

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Joseph
October 30, 2026
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Quick and reliable. Customer service team was very helpful in test selection process. Easy to communicate with.

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Thanks Joseph for the kind words. We love our customer service department. Amazing team. Even though you had a great experience, we would love any feedback you can give. [email protected]
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August 24, 2026
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Peter is very knowledgeable. Was very helpful and gave a sense of hope that i don’t think can be found in the traditional health care system.

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Thank you so much Tyler. Peter is quite amazing, so smart. We are proud to have him on our team and so happy he could give you insights that go deeper than traditional healthcare.
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Erin R
August 21, 2026
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Labs can be taken at home and have clear written instructions (can also find video instructions on their website). I met with Peter to discuss my results and he was extremely helpful and kind! I would purchase again!

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Thank you Erin for your kind review! We are so lucky to have Peter. He has helped so many people understand their lab results.
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August 7, 2026
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Top notch.

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Thanks Evan! Our team works hard and definitely deserves the praise. If there’s anything that we can improve always let us know. [email protected]
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July 3, 2026
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Best labs, prices, and professional service make this your top choice to only use this company. No other company can compare to the service. Extremely professional and courteous. Thank you, Rachel, for always helping me.

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Glad we could help! We are very passionate about our work here so our tip-top service will never change!
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June 15, 2026
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Thanks and well done

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Thanks Omar for your kind words! Our team is the best!
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Susan R
June 3, 2026
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Excellent way to test, quick, easy and discreet.

Owner's reply
Thanks for taking the time to leave a review! So glad we could help. We go over all of our reviews at each meeting!
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Erin K
April 8, 2026
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True Health’s customer service is top notch! I made a mistake when I ordered my Dutch test. I called customer service after hours, but I was able to leave a message. Rachel called me back the next morning, and we were able to get my order fixed! She was kind, helpful, and made the process smooth!

Owner's reply
Thanks for taking the time to compliment our team. They are mighty! So glad we could help you with your health journey.
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Marianne V
March 19, 2026
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I cannot say enough great things about True Health Labs and my experience with the Marcons test. Dr. Peter Stephenson was an absolute wealth of information—extremely intelligent and insightful. He connected all the dots and made me feel like I finally have been heard and seen. After years of dealing with anxiety, OCD, weight gain, inflammation, and depression, it was incredibly comforting to talk to someone who truly understood my situation. Dr. Stephenson spoke straight to my soul and made me feel validated. Thank you, True Health Labs, for providing such an invaluable service and support. Marianne

Owner's reply
Thank you for taking that time to write that review. We’re so lucky to have Peter on the team. His insights, as you pointed out, is incredibly valuable. I’m so glad he was able to help guide you Marianne.
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Jayme T
March 3, 2026
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Ordering tests through True Health Labs was easy and painless. Peter is incredibly knowledgeable and kind. He spent more time explaining and speaking with me than any of my doctors have in the last 3.5 years. Thank you Peter, you are a blessing. And thank you THL for making it possible for the public to avoid the BS control from the medical and insurance industries.

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Wow! Thank you so much for that incredible review. Peter and our clinical team have a great focus on giving insights that would normally never be given. Thank you Jayme for taking the time for the review.
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