Serum/Plasma Free Fatty Acids (Concentration) with Enzymatic Method
This test measures the level of free fatty acids in your blood, which are important fats your body uses for energy. Free fatty acids play a role in metabolism and can be influenced by diet, exercise, and certain medical conditions.
["Free fatty acids help your body produce energy, but high or low levels may signal health concerns."]
Key facts at a glance
- LOINC
- 111578-1
- Short code
- Hepat GFREcep AG in Tiss Tiss Doc IA
- Synonyms
- Hepat GFREcep AG in Tiss Tiss Doc IA
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Does This Test Measure?
Free fatty acids are a type of fat that circulate in your blood. Your body breaks down fats into these fatty acids to use as fuel, especially during exercise or fasting. This test specifically measures the concentration of free fatty acids in your serum or plasma, which can be influenced by factors like diet, physical activity, and certain medications.
Why Might You Need This Test?
Doctors may order this test to evaluate metabolic health, diagnose conditions like diabetes or metabolic syndrome, assess nutritional status, or monitor treatment responses in patients with disorders affecting fat metabolism.
How Is the Test Performed?
A blood sample is drawn from a vein, usually in your arm. The sample is then processed to separate serum or plasma, which is analyzed using an enzymatic method to measure free fatty acid levels.
What Do Results Mean?
Results provide a quantitative measure of free fatty acids in your bloodstream. While reference ranges can vary by lab, elevated levels may indicate conditions like uncontrolled diabetes, fasting, or certain hormonal imbalances. Lower levels might suggest malnutrition, liver disease, or other metabolic issues.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: Free Fatty Acids in Health and Disease
Short name
Free Fatty Acids (FFA) Serum/Plasma
Frequently asked questions
What are the normal ranges for this test?
Can diet or exercise affect my free fatty acid levels?
Are there any side effects or risks associated with this blood test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy