The CoQ10 test helps evaluate conditions related to cellular energy production and oxidative stress. Symptoms of CoQ10 deficiency include fatigue, muscle weakness, and cardiovascular problems. By assessing CoQ10 levels, the test aids in diagnosing conditions such as chronic fatigue syndrome and cardiovascular diseases, and in monitoring the effects of treatments that may influence CoQ10 status, such as statin medications. Low levels of CoQ10 can contribute to fatigue, muscle weakness, and cardiovascular issues. It is used to evaluate CoQ10 deficiencies in conditions like chronic fatigue syndrome, cardiovascular diseases, and to monitor patients on certain medications that may deplete CoQ10 levels.