Alanine Aminotransferase (ALT)
A liver enzyme that rises early when liver cells are injured or inflamed.
Consider this test if:
- Investigating fatigue, right-upper abdominal discomfort, or unexplained nausea
- Carrying metabolic risk factors for fatty liver such as excess weight, high triglycerides, or insulin resistance
- Tracking liver status while taking medications, statins, or supplements that can stress the liver
- Higher alcohol intake or a family history of liver disease
- Rechecking a previously elevated liver enzyme to see if it has returned to normal
- HSA/FSA eligible
- Typical results in 1 day · Reviewed by a real clinician
- Drawn at a CLIA/CAP-accredited lab near you ·
Pre-test considerations
No fasting is required for ALT alone. Strenuous exercise and some medications and supplements can transiently raise the result, so note recent heavy workouts and anything you take regularly. For tracking, keep conditions consistent between draws.
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What this test is for
Alanine aminotransferase (ALT) is an enzyme concentrated in liver cells, released into the blood when those cells are injured or inflamed. It is one of the most specific blood markers for liver damage and is more sensitive to hepatocyte injury than to bile-duct obstruction. Elevated ALT shows up in viral hepatitis, fatty liver disease, alcohol-related liver injury, cirrhosis, and drug- or supplement-induced liver stress, and it is often the first lab abnormality flagged before symptoms appear. ALT is usually read alongside AST: high ALT with negative hepatitis serology can point to fatty liver, mononucleosis, or medication effects, though some people with active liver disease still have ALT in the normal range.
This is the standalone ALT measurement, the right test for checking or tracking that single enzyme. If you want the broader liver picture (albumin, bilirubin, alkaline phosphatase, AST, and total protein together) the Hepatic Function Panel covers it, and the ALT and Hepatitis C Antibody Panel pairs this enzyme with hepatitis C screening.
- Specimen
- Serum or plasma
- Measures
- Enzyme activity
What you'll learn
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Insights that connect the dots. A clinician reads your whole picture, not one result in isolation, connecting family history, past results, and lifestyle into clear next steps.
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Your personalized action plan. Nutrition, supplements, and training in one clinician-reviewed protocol, updated as your results change.
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Track your trends. Upload results from any lab and see each biomarker trend over time, so you know what is working.
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Never miss a recheck. Mito tells you what is worth retesting and when, then reminds you so nothing slips.
What to expect
- 1 Book instantly
Click, book, done. Choose a convenient lab location near you. Transparent, up-front pricing.
- 2 Quick lab visit
Testing to fit your busy schedule, usually 15 minutes or less. Walk-in and appointments available.
- 3 Typical results in 1 day
Your results post straight to your dashboard as soon as the lab completes them.
- 4 Expert guidance
Included with Mito membership. A clinician reviews your results and your personalized action plan follows, with clear next steps.
Everything your health needs,
in one membership
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Every test at our cost
Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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Continuous tracking, all in one place
Upload past labs and watch your trends over time. Every marker and visit lives in one longitudinal record, so all your care stays together.
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Year-round clinician support
Text anytime and get clinician-reviewed answers. When you want to go deeper, 1:1 consultations are available at affordable rates.
All for $9/month
Order any test or consult without joining. For $9/month, members unlock member prices, trend tracking, and year-round clinician guidance.
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Frequently asked questions
View all FAQsHow does pricing work?
Every test shows the member price next to the standard non-member price, so you can see what membership saves you. The member price is our cost, covering the lab and what it takes to run the service. It is never a profit on the test itself. Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9 per month, and any applicable lab order or draw fee is itemized before you pay.
Where do I get tested?
Choose an available partner lab at checkout. If your cart contains multiple blood tests, Mito helps consolidate the eligible tests at one lab when possible. At-home kits and scans follow the collection or appointment process shown on their product page.
Is this eligible for HSA/FSA?
Yes. Eligible tests can be paid for with an HSA or FSA card at checkout.
When will I get my results?
Your results appear in your Mito dashboard after the laboratory completes processing. A clinician then reviews them before your analysis and personalized action plan are finalized. Timing varies by test, and specialty assays and at-home kits may take longer.
Do I need a physician's order?
No. Mito provides the laboratory order when one is required, so you do not need to arrange a separate physician visit before purchasing.
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