Q10 (Coenzyme Q10)
Overview
Coenzyme Q10 (CoQ10), measured in plasma or serum, is a lipid-soluble antioxidant and essential cofactor in the mitochondrial electron transport chain, facilitating ATP production. It protects cell membranes from oxidative damage and supports cardiovascular and energy metabolism functions. Low levels may indicate mitochondrial disorders, statin use, heart failure, or aging, while high levels are less clinically significant; it is useful for assessing deficiency risk in chronic diseases and monitoring supplementation efficacy, though evidence for routine clinical use remains limited.
Clinical Use Cases
- Evaluating CoQ10 deficiency in mitochondrial diseases.
- Monitoring statin-induced myopathy or depletion.
- Assessing status in heart failure or neurodegenerative disorders.
- Research on aging, fertility, and oxidative stress.
- Guiding supplementation in select cardiovascular conditions.
Specimen Types
- Serum.
- Plasma (EDTA or heparin).
- Whole blood (less common).
Measurement Methods
- High-performance liquid chromatography (HPLC) with electrochemical or UV detection.
- Liquid chromatography-tandem mass spectrometry (LC-MS/MS).
- Enzymatic assays (research settings).
Test Preparation and Influencing Factors
- Fasting preferred for 8-12 hours to minimize lipid interference.
- Avoid high-dose supplements for 48-72 hours prior.
- Influenced by statins, beta-blockers, age, and diet rich in CoQ10.
- Recent exercise or oxidative stress may alter levels.
- Sample handling critical: protect from light, freeze promptly.
Synonyms
- CoQ10.
- Ubiquinone.
- Ubiquinol (reduced form).
- Coenzyme Q.