Acetateairmcnc
This test measures acetate levels in exhaled air to help evaluate metabolic function and certain metabolic disorders.
{"Measures acetate (a type of acid) in breath samples","Helps diagnose and monitor metabolic disorders","Involved in conditions like diabetic ketoacidosis","Non-invasive breath test procedure","Results help doctors assess how your body processes fats"}
Key facts at a glance
- LOINC
- 38658-1
- Short code
- ACE air
- Synonyms
- Acetate Air-mCnc
- Category
- chemistry
- Sample
- serum
- Container
- specialized breath collection container or Tedlar bag
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- gas chromatography-mass spectrometry (GC-MS) or enzymatic assay
- CPT
- 82803
- SNOMED
- 44703009
- Specimen volume
- minimum 100 mL breath sample or as specified by collection device
- Stability
- analyze within 24 hours; store at 2-8°C if delay exceeds 4 hours
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 48–72 hours
- Order
- routine
What is this test?
The acetate test measures the amount of acetate, a type of volatile organic compound, in your exhaled breath or air sample. Acetate is a byproduct of fat metabolism and is normally produced in small amounts by the body. When metabolic processes are disrupted, acetate levels can change significantly.
Why is it performed?
This test is typically ordered to help evaluate metabolic function, particularly in conditions affecting fat metabolism. It may be used to monitor conditions such as diabetic ketoacidosis, certain liver disorders, or inborn errors of metabolism. The test can also be helpful in assessing the effectiveness of treatments for these conditions.
How is the sample collected?
For this test, you will be asked to exhale into a special collection device or bag. The sample is then analyzed in a laboratory to measure the acetate concentration. The procedure is non-invasive and typically takes only a few minutes. You may be asked to fast or avoid certain foods before the test, depending on your doctor's instructions.
Understanding your results
Normal acetate levels in breath vary depending on the laboratory and method used. Your doctor will interpret your results based on your overall health, symptoms, and other test findings. Elevated acetate levels may indicate metabolic disturbances, while very low levels are less common but can also provide important clinical information.
Reference range
Reference range not well established; consult laboratory for interpretationN/A
Patient should fast for at least 8 hours prior to collection. Avoid alcohol and nicotine for 24 hours before testing. Avoid high-fat meals the evening before collection. Inform laboratory of any medications that may affect acetate metabolism.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings2
Frequently asked questions
Do I need to prepare for this test?
Is the test painful?
How long does it take to get results?
What do high acetate levels mean?
Can I take my medications before the test?
Sources
- 1
- 2
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