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ForumsLab Results & BiomarkersGGT as a liver health marker — more sensitive than ALT?

GGT as a liver health marker — more sensitive than ALT?

MASHdoc_SA Sun, Mar 1, 2026 at 10:12 AM 10 replies 323 viewsPage 1 of 2
MASHdoc_SA
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Aug 2024
San Antonio, TX
Mar 1, 2026 at 11:37 AM#1
I was diagnosed with MASLD (formerly NAFLD) in 2022 via ultrasound and elevated liver enzymes. Biopsy confirmed MASH (formerly NASH) with F2 fibrosis. My hepatologist started me on tirzepatide specifically for the liver benefits, alongside vitamin E 800 IU. Here are my liver labs over time. I'm genuinely emotional looking at these numbers. | Marker | Baseline (Jan 2025) | Month 3 | Month 6 | Month 8 (Now) | Ref Range | |--------|-------------------|---------|---------|---------------|-----------| | ALT | 94 U/L | 58 U/L | 34 U/L | 22 U/L | 7-56 | | AST | 72 U/L | 48 U/L | 30 U/L | 19 U/L | 10-40 | | GGT | 118 U/L | 74 U/L | 42 U/L | 28 U/L | 9-48 | | Albumin | 3.8 g/dL | 3.9 g/dL | 4.1 g/dL | 4.3 g/dL | 3.5-5.0 | | Platelets | 158 K/µL | 172 K/µL | 189 K/µL | 198 K/µL | 150-400 | | FIB-4 Score | 2.14 | 1.62 | 1.08 | 0.78 | <1.3 low risk | The FIB-4 score going from 2.14 (indeterminate/high) to 0.78 (low risk) is the headline. My hepatologist said I may have reversed from F2 to F1 or even F0 fibrosis. Follow-up FibroScan scheduled for December. 46 lbs down, liver is healing. I'm crying writing this. 😭
25 11TirzTom, TrialTracker_MD, JennaRN and 22 others
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sean_dublin
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Nov 2024
Dublin, IE
Mar 1, 2026 at 11:54 AM#2
Frank, these results are textbook GLP-1 benefit in MASLD/MASH. Let me put some context around your numbers for others reading: ALT is the most liver-specific aminotransferase. Your drop from 94 to 22 represents resolution of active hepatocellular injury. A normal ALT doesn't guarantee zero steatosis, but it strongly suggests reduced inflammation. GGT is often the most sensitive marker for fatty liver. Going from 118 to 28 is remarkable — that's a 76% reduction. FIB-4 combines age, AST, ALT, and platelets into a fibrosis risk score. Your improvement from 2.14 to 0.78 correlates with likely fibrosis regression. The SYNERGY-NASH trial with tirzepatide showed MASH resolution in 74% and fibrosis improvement in 47% of patients at 15mg — you're tracking right in line with trial data. Rising platelets (158 to 198) is also a good sign — low platelets can indicate portal hypertension from liver fibrosis, and your improvement suggests reduced hepatic pressure. Keep doing what you're doing. The FibroScan in December will give you more definitive staging.
Last edited: Mar 1, 2026 at 12:54 PM
10 24sean_dublin, hannah_MT, Dr.SportsMedIN and 7 others
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CarlaRPh_TPA
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Jan 2024
Tampa, FL
Mar 1, 2026 at 12:11 PM#3
This thread is everything. I just got diagnosed with MASLD last month — ALT 78, AST 54, GGT 96, with an ultrasound showing moderate steatosis. My BMI is 38. My GI doc is recommending semaglutide. Frank — were your numbers going up before treatment or had they been stable? Mine have been slowly rising over 3 years and I'm scared about progression.
Last edited: Mar 1, 2026 at 4:11 PM
1 15BrianDallas92
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SarahChen_PharmD
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Dec 2023
San Diego, CA
Mar 1, 2026 at 12:28 PM#4
> were your numbers going up before treatment or had they been stable? Going up. In 2022 my ALT was 52, by mid-2023 it was 68, and by late 2024 it was 94. Same trend with GGT. That's what prompted the biopsy — the worsening trajectory. And the biopsy is what got my insurance to approve tirzepatide for the MASH indication. The fact that your numbers are rising is actually more reason to act NOW rather than wait. MASLD is progressive in a subset of patients and catching it before you develop significant fibrosis is key. F0-F1 fibrosis is generally fully reversible. F3-F4 gets much harder.
46 23TinaHashiRN, robert_kc, dan_philly and 43 others
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mel_PDX
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Dec 2024
Portland, OR
Mar 1, 2026 at 12:45 PM#5
Not as dramatic as Frank's numbers but adding mine for completeness: Semaglutide 1.7 mg, 5 months | Marker | Baseline | Month 5 | |--------|----------|---------| | ALT | 48 U/L | 26 U/L | | AST | 38 U/L | 24 U/L | | GGT | 62 U/L | 35 U/L | No formal MASLD diagnosis — my doc just said "mildly elevated enzymes, probably fatty liver." Lost 28 lbs so far. Everything is normalizing nicely. Also quit alcohol completely which I'm sure helps.
Last edited: Mar 1, 2026 at 6:45 PM
49 20RegAffairsDC, BiostatsBrad, PeptideSynthNJ and 46 others
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