For acquired forms, the mean corpuscular volume is normal or high.

铁粒幼细胞贫血的均红细胞体积则是正常升高的。

Diagnosis starts with a routine blood test, that shows low hemoglobin levels, decreased mean corpuscular volume, or MCV; and low mean corpuscular hemoglobin, or MCH.

诊断始于血常规检查，出现血红蛋、均红细胞体积（MCV）和均红细胞血红蛋（MCH）。

On the full blood count, the mean corpuscular volume, which reflects the size of the red blood cell, is usually normal or low, for the congenital causes.

在先天铁粒幼细胞贫血的全血细胞计数中，反映红细胞大小的均红细胞体积，通常是正常降的。