: Decenoylcarnitine, Blood

: What Is Decenoylcarnitine?

: Decenoylcarnitine is an acylcarnitine, a molecule made when a fatty acid is attached to carnitine. Carnitine acts like a shuttle that helps fatty acids enter the energy-producing parts of cells. Measuring specific acylcarnitines gives clues about how well the body is breaking down fats for energy.

: How the Test Is Done

: The test is usually performed on a blood sample, often collected from a vein or by a small finger or heel stick in newborn screening. The sample is analyzed to measure the concentration of decenoylcarnitine. In many labs this is done as part of a broader acylcarnitine profile rather than as a single measurement.

: Why It May Be Ordered

: Your healthcare provider may order this test if a metabolic disorder is suspected, such as a fatty acid oxidation defect or another condition affecting fat metabolism. It may also be part of newborn screening or follow-up testing when other acylcarnitine results are abnormal. Symptoms that can prompt testing include unexplained low blood sugar, muscle weakness, or episodes of lethargy.

: What Results Mean

: Results are interpreted alongside other acylcarnitines and clinical findings. Levels outside the expected range may suggest a metabolic disorder, but a single abnormal value does not confirm a diagnosis. Your provider will consider the pattern of results, symptoms, and possibly additional testing. Because reference ranges vary by laboratory and method, ask your provider to explain your specific numbers.