Ajinomoto Co., Ltd.

Wako Pure Chemical Industries, Inc.

Masako Hayakawa

Kazutaka Shimbo

Hiroo Yoshida

An external standard solution for use in the analysis of amino acid in plasma, containing,

Standard solution for use in analysis of amino acids in plasma

An external standard solution for use in the analysis of amino acid in plasma, containing, (1) at least one amino acid selected from the following components A, at a concentration of 0.0007 M to 0.49 M, and (2) (i) at least one amino acid selected from the following components B, at a concentration of 0.2 to 0.9 times of the lowest-concentration amino acid among the amino acids selected from components A, (ii) at least one amino acid selected from the following components C, at a concentration of 0.1 to 0.4 times of the lowest-concentration amino acid among amino acids selected from the components A, or (iii) at least one amino acid selected from the following components D, at a concentration of 0.05 to 0.2 times of the lowest-concentration amino acid among amino acids selected from the components A;

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Tokyo, Japan

Masako Hayakawa