Patent ID: 8673647
Filing Date: 2014-03-18
Classification: G01N,G16B

Abstract:
1. A method of evaluating stress, comprising: an obtaining step of obtaining amino acid concentration data on concentration values of at least three amino acids in blood collected from a subject to be examined; and a concentration value criterion evaluating step of evaluating a stress state including at least a depressive illness or a major depressive illness in the subject, based on both (i) the concentration values of at least three amino acids which comprise at least two amino acids selected from the group consisting of Lys, His, ABA, Asn, Phe, Leu, Ile, Val, Trp, Tyr and Met contained in the amino acid concentration data of the subject obtained at the obtaining step and (ii) a multivariate discriminant containing at least the concentrations of the three amino acids as explanatory variables, wherein the multivariate discriminant does not include a fractional expression.