Aspartate Aminotransferase (AST)
An enzyme that leaks into the blood when liver, heart, or muscle cells are damaged.
Consider this test if:
- Investigating elevated liver enzymes, fatty liver, or hepatitis risk
- Drinking regularly or on a medication that can affect the liver
- Monitoring a known liver condition over time
- Setting a baseline alongside ALT and other liver markers
- Following up an abnormal result on a previous metabolic panel
- 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 AST alone. Avoid strenuous exercise in the day or two before the draw, since heavy muscle activity can raise AST and mimic liver-related elevations. Note any alcohol intake and medications or supplements, as several can affect the result.
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What this test is for
Aspartate aminotransferase (AST) is an enzyme found throughout the body, with high concentrations in the liver, heart, and skeletal muscle. When those cells are injured, AST spills into the blood, so an elevated level points to tissue damage, most often in the liver from fatty liver disease, hepatitis, alcohol, or certain medications. AST is rarely read alone; it is most informative next to ALT, since ALT is more liver-specific and the AST/ALT ratio helps separate alcohol-related and other liver patterns. Because AST also rises with strenuous exercise, muscle injury, and heart muscle damage, a high result is interpreted with that context rather than assumed to be the liver. This is the same AST measurement included in the hepatic function panel, offered here as a standalone marker for targeted tracking.
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.
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Members pay our cost on every test, with lab fees passed straight through. The full receipt is itemized, never padded.
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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 — never a profit on the test itself; Mito makes its money on the $9 membership, not on marking up your tests. Membership is $9/mo, and you still pay the lab’s order fee. Prices are itemized before you pay, with no hidden fees.
Where do I get tested?
Choose a partner lab (Quest, Labcorp, or BioReference) at checkout. If your cart spans multiple tests, we consolidate the whole order onto a single lab so you only make one visit.
Is this eligible for HSA/FSA?
Yes. This test is HSA/FSA eligible, and you can pay with your HSA/FSA card at checkout.
When will I get my results?
Your results post to your dashboard once your lab completes them, then a clinician reviews them and your full analysis and personalized action plan (with clear next steps) follow. Turnaround varies by test: specialty assays and at-home kits take longer, and each test shows its expected turnaround before you buy.
Do I need a doctor’s order?
No. Mito provides the lab order for you, so you can book and get tested without a separate doctor visit.
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