Platform
Company
Immunology & Autoimmune
Review status
Currently under review
Pending specialist review and validation.
This test measures C10:2 decadienoylcarnitine, a medium‑chain acylcarnitine with two double bonds, in your blood. Acylcarnitines form when fatty acids are linked to carnitine so they can be transported into mitochondria for energy production. Measuring individual acylcarnitines helps clinicians see how well your body is breaking down fats.
C10:2 is part of a broader acylcarnitine profile analyzed by tandem mass spectrometry. It is commonly used in newborn screening and in evaluations for inherited metabolic conditions that affect fatty acid oxidation, as well as to monitor known metabolic disorders.
Abnormal C10:2 levels can be a clue to problems with the pathways your cells use to turn fats into energy. Certain fatty acid oxidation disorders show characteristic patterns across several acylcarnitines, and C10:2 can contribute to that pattern recognition. During illness, prolonged fasting, or metabolic stress, these differences may become more apparent, which is why clinicians may order or repeat testing during or after such events.
Results are most useful when interpreted together with other acylcarnitines, clinical symptoms, and sometimes genetic testing. Identifying an underlying disorder can guide nutrition, reduce risk during illness, and help prevent complications such as low blood sugar, muscle breakdown, or heart and liver stress.
A result within the expected range generally supports typical fat metabolism, especially when the rest of the acylcarnitine profile is also unremarkable. A mildly increased value can be temporary and related to recent diet, fasting, intercurrent illness, or supplements. Your clinician may repeat the test when you are well or after a standard feeding interval to confirm.
If your value is persistently or clearly abnormal, your care team may order follow‑up tests, such as a full acylcarnitine profile, urine organic acids, acylglycines, or genetic testing. Management depends on the overall pattern and your history. If a fatty acid oxidation disorder is suspected, you may be advised on sick‑day plans, avoidance of prolonged fasting, and nutrition strategies, and you might be referred to a metabolic specialist.
Reference intervals vary by laboratory, analyzer, methodology, population, and units. The ranges shown here are for education only. Always interpret your results against the reference interval printed on your own lab report.
Time since last meal influences acylcarnitines. Prolonged fasting or poor intake can transiently increase certain species, so many labs request sampling after a routine feed or at a consistent interval.
Fever, vomiting, strenuous exercise, or other stressors can shift fatty acid use and alter levels. Results obtained during acute illness may differ from baseline and sometimes prompt a repeat when recovered.
Carnitine supplements, medium‑chain triglyceride products, and a ketogenic or very high‑fat diet can change the acylcarnitine pattern, including C10:2. Share all supplements and special diets with your clinician.
Some drugs affect fatty acid metabolism or carnitine availability. Examples include valproate, pivalate‑containing antibiotics, and certain lipid‑lowering or investigational metabolic therapies.
Newborns, especially preterm infants, have evolving metabolism in the first weeks of life. Age‑specific interpretation is important, and values are typically reviewed alongside the full profile.
Proper collection and prompt processing help maintain stability. Hemolysis, prolonged room‑temperature storage, or delayed separation can subtly affect acylcarnitine measurements.
References