The polymorphism (insertion, I or deletion, D) of angiotensin converting enzyme (ACE) gene is designated as the presence of a 287 bp Alu repeat. The D/D homozygote carrier is associated with high ACE activity, and this high activity has been implicated with hypertension, coronary artery disease, or diabetic nephropathy. We studied the clinical candidate marker in ACE gene polymorphism using chemical and hematological analysis. The subjects are divided into normotensive and hypertensive groups and ACE genotype in the group was confirmed by PCR method. Chemical analysis was preceded with Hitachi7060, and hematological analysis was performed using Mythic 22. In 116 targeted people, 17 (38.64%) of 44 I/I genotype group are hypertension, 15 (34.09%) in 44 with D/I, but, D/D type in the 28 cases is 15 patients (53.57%) in hypertension. In hypertension group, biochemical analysis (triglyceride, and alkaline phosphatase) and hematological analysis (white blood cell, platelet) are showed high value in D/D genotype of ACE gene. The relationship between hypertension and ACE genotype is the same results as previously reported and we thought that the high laboratory value of white blood cell, platelet, triglycerides, and alkaline phosphatase are also indicator of hypertension in D/D type of ACE.