Objectve:To observe the variety of vein red blood cell index (RBC, HGB, HCT, MCV, MCH, MCHC with RDW) for the healthy elderly with different age groups.

• 目的 :观察不同年龄段健康老年人静脉血红细胞指标 (RBC、HGB、HCT、MCV、MCH、MCHC和RDW)的变化。