Ethylmalonic Acid

Adipate, Suberate, and Ethylmalonate elevations indicate metabolic blocks. Carnitine is needed to move fatty acids into the mitochondria where they are converted to energy using vitamin B2. When insufficient levels of carnitine or vitamin B2 slow down this process, other parts of the cellular machinery take over and make adipate and suberate. A similar block in another pathway causes high ethylmalonate. Since most of your body’s energy is produced from the burning of fatty acids, your muscles and brain suffer when this cellular energy pathway is blocked.

Value may be elevated in:

- ketosis, 

- fasting, 

- deficiency of the fat-transporting molecule carnitine, 

- genetic deficiencies of fatty acid metabolism

- the genetic disease multiple acyl dehydrogenase deficiency, 

- excessive intake of adipic acid-containing foods such as Jell-O,

- by increased intake of foods containing medium chain triglycerides such as coconut oil.

Symptoms:

Symptoms include hypoglycemia and lethargy. 

Potential treatment options:

- Supplementation of carnitine and vitamin B2 may be needed when these compounds are too high. Insufficiency of vitamin B2 is implicated in impaired carbohydrate metabolism, migraines, and dementia.

- Carnitine supplementation has been documented to improve Alzheimer’s, age-related cognitive decline, and cardiac function.

Note: These tests are used to check for rare metabolic disorders, usually in infants. There is no apparent reason nor benefit to checking ethylmalonic and methylsuccinic acid levels in adults who aren’t suspected to have rare genetic disorders.

Ethylmalonic Acid (EMA) is a compound produced when your body breaks down certain fats for energy. It’s formed during short-chain fatty acid metabolism and can reflect how efficiently your mitochondria (your cells’ energy factories) are working.

When Ethylmalonic Acid levels are low, it usually indicates that your body is effectively processing fats and energy — a sign of healthy mitochondrial function.

Possible Causes of Low Levels

Low EMA results are typically not a concern. In fact, they often reflect a balanced metabolism. However, mildly low levels can sometimes be associated with:

• Low fat intake or poor fat absorption (the body isn’t producing normal amounts of short-chain fatty acids)

• Reduced gut bacterial activity that makes short-chain fatty acids like butyrate

• Very low metabolic stress, meaning your mitochondria are not under strain

Why It’s Tested

The Ethylmalonic Acid marker helps assess:

• Mitochondrial energy production

• Fatty acid metabolism

• Riboflavin (vitamin B2) status, which supports energy-related enzymes

What You Can Do

If your EMA levels are low and other energy metabolism markers are also below range, your clinician might look for:

• Dietary fat balance: Ensure adequate healthy fat intake (e.g., olive oil, avocados, nuts)

• Gut microbiome health: Support beneficial bacteria that produce short-chain fatty acids through fiber and prebiotics

• Nutrient sufficiency: Make sure you’re getting enough B vitamins, especially riboflavin (B2)

Key Insight

Low Ethylmalonic Acid is generally a good sign, showing that your body’s energy systems are functioning well. It becomes meaningful mainly when interpreted alongside other organic acid markers that evaluate fat metabolism and mitochondrial efficiency.

Ethylmalonate, together with Adipate and Suberate, gives information about your ability to process fatty acids.

Note: These tests are used to check for rare metabolic disorders, usually in infants. There is no apparent reason nor benefit to checking ethylmalonic and methylsuccinic acid levels in adults who aren’t suspected to have rare genetic disorders.