Dysmetabolic syndrome X: A constellation of metabolic abnormalities in serum or plasma insulin / glucose level ratios, lipids (triglycerides, LDL cholesterol subtypes and/or HDL cholesterol), uric acid levels, coagulation factor imbalances and vascular physiology.ysmetabolic syndrome X: A constellation of metabolic abnormalities in serum or plasma insulin / glucose level ratios, lipids (triglycerides, LDL cholesterol subtypes and/or HDL cholesterol), uric acid levels, coagulation factor imbalances and vascular physiology.