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

获得性铁粒幼细胞性贫血的平均红细胞体积则是正常或升高的。

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，出现低血红蛋白、低平均红细胞体积（MCV）和低平均红细胞血红蛋白（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.

在先天性铁粒幼细胞性贫血的全血细胞计数中，反映红细胞大小的平均红细胞体积，通常是正常或降低的。