Lab Tests for Fatty Liver Disease
Non-alcoholic fatty liver disease (NAFLD) affects an estimated 80-100 million Americans and is the most common chronic liver condition in the United States. It often produces no symptoms until significant damage has occurred, making lab screening essential. Elevated liver enzymes (ALT, AST, GGT) are often the first clue, while metabolic markers help identify the insulin resistance and metabolic syndrome that drive the condition. JustLabs lets you order liver function tests and metabolic markers online at transparent prices, no doctor visit required.
Recommended Tests
Understanding Your Results
| Test | Normal Range | Low Means | High Means |
|---|---|---|---|
| ALT (Hepatic Panel) | M: 7–56 U/L; F: 7–45 U/L | Normal liver cell turnover | Liver inflammation or damage |
| AST (Hepatic Panel) | 10–40 U/L | Normal | Liver or muscle damage |
| GGT | M: 8–61 U/L; F: 5–36 U/L | Normal bile duct function | Biliary disease, alcohol use, or fatty liver |
| Fasting Insulin | <25 mIU/L | Good insulin sensitivity | Insulin resistance — drives fatty liver |
How to Order
Order Online
Select your tests and pay securely. A licensed physician authorizes your order.
Visit Quest Diagnostics
Walk into any of 2,200+ Quest locations nationwide. No appointment needed.
Get Results
Results available in your account within 1-2 business days.
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Content reviewed for accuracy by the JustLabs editorial team.