Aspartate Aminotransferase (AST)
- Sample Type
- Standard
- Fasting
- No
- Unit
- U/L
AST is an enzyme found in high concentrations in the liver, heart, and skeletal muscle. In the context of a COVID-19 Panel, AST is used as a biomarker for systemic inflammation and multi-organ involvement. While less specific to the liver than ALT, elevated AST in COVID-19 patients is often correlated with increased disease severity, cytokine release syndrome, or drug-induced liver injury (DILI) from therapeutic interventions.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
AST is highly sensitive to muscle trauma. Recent heavy weightlifting, intramuscular injections, or minor muscle injuries can cause significant elevations that may be misinterpreted as liver or heart damage.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Aspartate Aminotransferase (AST):
Official Sources
- AST Test: MedlinePlus Medical TestMedlinePlus
Research & Guidelines
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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