Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA315792

Local Sample ID:	348
Subject ID:	SU003016
Subject Type:	Human
Subject Species:	Homo sapiens
Taxonomy ID:	9606
Age Or Age Range:	22-93
Gender:	Male and female

Select appropriate tab below to view additional metadata details:

Sample Preparation:

Sampleprep ID:	SP003022
Sampleprep Summary:	Plasma samples were thawed on ice and aliquoted to prepare extracts for three different LC-MS methods: HILIC-pos: 10 µL of plasma sample was extracted using 90 µL of acetonitrile/methanol/formic acid (74.9:24.9:0.2 v/v/v) containing stable isotope-labeled internal standards (valine-d8, Sigma-Aldrich; St. Louis, MO; and phenylalanine-d8, Cambridge Isotope Laboratories; Andover, MA). The samples were centrifuged (10 min, 9,000 x g, 4°C), and the supernatants were transferred to autosampler vials containing deactivated glass inserts. HILIC-neg: 30 µL of each plasma sample was extracted using 120 µL of 80% methanol containing inosine-15N4, thymine-d4 and glycocholate-d4 internal standards (Cambridge Isotope Laboratories; Andover, MA). The samples were centrifuged (10 min, 9,000 x g, 4°C), and the supernatants were transferred to autosampler vials containing deactivated glass inserts. C8-pos: 10 µL of plasma sample was extracted using 190 µL of isopropanol containing 1,2-didodecanoyl-sn-glycero-3-phosphocholine (Avanti Polar Lipids; Alabaster, AL). The samples were centrifuged (10 min, 9,000 x g, ambient temperature), and the supernatants were transferred to autosampler vials containing deactivated glass inserts.

Sampleprep ID:

SP003022

Sampleprep Summary:

Plasma samples were thawed on ice and aliquoted to prepare extracts for three different LC-MS methods: HILIC-pos: 10 µL of plasma sample was extracted using 90 µL of acetonitrile/methanol/formic acid (74.9:24.9:0.2 v/v/v) containing stable isotope-labeled internal standards (valine-d8, Sigma-Aldrich; St. Louis, MO; and phenylalanine-d8, Cambridge Isotope Laboratories; Andover, MA). The samples were centrifuged (10 min, 9,000 x g, 4°C), and the supernatants were transferred to autosampler vials containing deactivated glass inserts. HILIC-neg: 30 µL of each plasma sample was extracted using 120 µL of 80% methanol containing inosine-15N4, thymine-d4 and glycocholate-d4 internal standards (Cambridge Isotope Laboratories; Andover, MA). The samples were centrifuged (10 min, 9,000 x g, 4°C), and the supernatants were transferred to autosampler vials containing deactivated glass inserts. C8-pos: 10 µL of plasma sample was extracted using 190 µL of isopropanol containing 1,2-didodecanoyl-sn-glycero-3-phosphocholine (Avanti Polar Lipids; Alabaster, AL). The samples were centrifuged (10 min, 9,000 x g, ambient temperature), and the supernatants were transferred to autosampler vials containing deactivated glass inserts.