What is an optimal GGT level?
The short answer
Optimal GGT is under 20 U/L, as stated on video.
Most labs call GGT high only above 55. So your report can call 38 normal while it sits above the optimal ceiling.
“so between a gtt between 15 and 20 means you've done a good job of getting rid of enough toxins that the body doesn't have to increase gtt”
What each range means
- under 20 U/L Optimal
- 20–55 U/L Normal on most reports. Above optimal Dr. Joseph Pizzorno · 23:47 →
- over 55 U/L Most labs flag this as high
What GGT measures
An enzyme concentrated in the liver and bile ducts.
Alcohol and bile-flow problems move it, so it helps explain why another liver enzyme has climbed.
Checked against MedlinePlus — Gamma-glutamyl Transferase (GGT) Test.
Why it matters, on the record
“so between a gtt between 15 and 20 means you've done a good job of getting rid of enough toxins that the body doesn't have to increase gtt”
Common questions
What is an optimal GGT level?
Under 20 U/L, from a quote on video (Dr. Joseph Pizzorno, 23:47).
What is a normal GGT level?
Most US labs print 0–55 U/L. Your report grades you against that range. It exists to catch disease, not to describe your best.
What does your GGT number mean?
On a typical lab range, up to 55 U/L is normal and over 55 is high. Your own report prints its range next to your number, and that is the one your lab uses. The optimal range on this page comes with the quote behind it.
Is GGT of 38 normal?
A typical lab range calls it normal. On video, the optimal ceiling is 20 U/L (Dr. Joseph Pizzorno, 23:47), so by that line it is high.
What does the GGT test measure?
An enzyme concentrated in the liver and bile ducts. Alcohol and bile-flow problems move it, so it helps explain why another liver enzyme has climbed.