Disclosed are a method of aiding judgment of risk of circulatory diseases, coronary heart diseases, or stroke； and a method of aiding diagnosis of stroke. The method of aiding judgment of risk of circulatory diseases, coronary heart diseases, or stroke includes measuring LDL-TG value in blood separated from the body, and a high LDL-TG value is indicative of high risk of circulatory diseases, coronary heart diseases, or stroke. The method of aiding diagnosis of stroke includes measuring LDL-TG value in blood separated from the body, and a high LDL-TG value is indicative of onset of stroke.本發明揭示有一種輔助判斷循環器官疾病、冠狀動脈心臟病或腦中風的風險之方法、及輔助腦中風之診斷之方法。本發明之輔助判斷循環器官疾病、冠狀動脈心臟病或腦中風的風險之方法包括測定從活體分離出之血液中之LDL-TG值，所測定之LDL-TG值較高表示循環器官疾病、冠狀動脈心臟病或腦中風的風險較高。本發明之輔助腦中風之診斷之方法包括測定從活體分離出之血液中之LDL-TG值，所測定之LDL-TG值較高表示腦中風正在發病之可能性較高。
