The values of plasma amino acids from both umbilical venous and peripheral venous bloods taken between two and four days of age were analyzed, calculated, and compared.

• 我们分别定量脐静脉血中及新生儿末梢血中各种血浆胺基酸的正常值，以平均值标准偏差表之，并列出其范围，同时算出两者个别胺基酸之比较值。