An AST (Aspartate Aminotransferase) test measures the level of this enzyme in your blood. Unlike ALT, AST is found in multiple tissues including liver, heart, muscles, kidneys, and brain. This makes it less specific for liver disease but useful for broader evaluation.
What This Test Measures
AST (SGOT):
An enzyme present in several tissues. Damage to any of these tissues releases AST into the bloodstream. Comparing AST to ALT levels helps identify the source.
Reference Ranges
• Men: 10-40 U/L
• Women: 9-32 U/L
Who Should Consider This Test
• Evaluating liver function
• Suspected heart attack (along with cardiac markers)
• Muscle injury or disease evaluation
• Monitoring medications affecting liver
• Comprehensive health screening
What Elevated AST May Indicate
Liver Conditions:
• Hepatitis
• Cirrhosis
• Fatty liver disease
• Liver damage from alcohol or medications
Non-Liver Conditions:
• Heart attack (myocardial infarction)
• Muscle damage or rhabdomyolysis
• Strenuous exercise
• Hemolysis (red blood cell destruction)
AST/ALT Ratio
Comparing AST to ALT helps identify causes:
• AST > ALT (ratio >2): Suggests alcoholic liver disease
• ALT > AST: More typical of non-alcoholic fatty liver, viral hepatitis
• Very high AST with normal ALT: May indicate heart or muscle damage
How It Works
1. Order your test online – no doctor visit required
2. Visit any Quest Diagnostics location nationwide
3. Simple blood draw takes approximately 5 minutes
4. Results delivered to your secure portal within 1-2 business days
Preparation
No fasting required. Avoid strenuous exercise 24-48 hours before testing.
Related Tests to Consider
• ALT – More specific liver enzyme
• CK (Creatine Kinase) – If muscle damage suspected
• Comprehensive Metabolic Panel – Includes AST and ALT
• Cardiac markers – If heart involvement suspected
Why Choose Wittmer Rejuvenation Clinic
At $15, our AST test is affordably priced. We partner with Quest Diagnostics for reliable, CLIA-certified laboratory testing.
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