Sample preservation solution, and analysis device and analysis method using the same
The present invention provides means with which bile acids, phenols, indoles and organic acids contained in a sample can be stably preserved without cryopreservation of the sample. A sample preservation solution of the present invention is a sample preservation solution used for analyzing at least one component selected from the group consisting of bile acids, phenols, indoles and organic acids contained in a biological or environmental sample, containing at least the following (A) and (B): (A) condensed phosphate or polyoxyethylene sorbitan alkylate; and (B) guanidinium thiocyanate, Tris-HCl (pH 7 to 9), and EDTA.
1 . A sample preservation solution used for analyzing at least one component selected from the group consisting of bile acids, phenols, indoles and organic acids contained in a biological or environmental sample, comprising both (A) and (B):
(A) condensed phosphate; and
(B) guanidinium thiocyanate, Tris-HCl (pH 7 to 9), and EDTA.
2 . The sample preservation solution according to claim 1 , wherein the condensed phosphate is 5 mM to 150 mM sodium pyrophosphate.
3 . The sample preservation solution according to claim 1 ,
wherein a concentration of the guanidinium thiocyanate is 0.1 M to 5 M,
a concentration of the Tris-HCl (pH 7 to 9) is 40 mM to 150 mM, and
a concentration of the EDTA is 1 mM to 50 mM.
4 . The sample preservation solution according to claim 1 , wherein the sample is feces.