Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA214340

Local Sample ID:	Patient_Negative_OP_22
Subject ID:	SU002329
Subject Type:	Human
Subject Species:	Homo sapiens
Taxonomy ID:	9606

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Sample Preparation:

Sampleprep ID:	SP002335
Sampleprep Summary:	50 μL plasma, was mixed with 20 μL internal standard working solution (SPLASH® LIPIDOMIX® Mass Spec Standard + Cer/sph mixture I), extracted with 1000 μL butanol/methanol (1/1, v/v, 10 mM ammonium formate) for 10 min on a vortex mixture. Samples were pelleted by centrifugation at 4000 x g for 5 min at room temperature. The supernatant was moved to a clean glass tube, dried under nitrogen, and resuspended in 100 μL MTBE/methanol (1/3, v/v) with 10 mM ammonium formate. 5 μL of each sample was combined to make a pooled quality control (QC) sample and ran every ten samples in the long sequence to monitor retention time and signal intensity drift. The remaining samples (50 μL) were transferred into injection vials for lipidomic analysis.

Sampleprep ID:

SP002335

Sampleprep Summary:

50 μL plasma, was mixed with 20 μL internal standard working solution (SPLASH® LIPIDOMIX® Mass Spec Standard + Cer/sph mixture I), extracted with 1000 μL butanol/methanol (1/1, v/v, 10 mM ammonium formate) for 10 min on a vortex mixture. Samples were pelleted by centrifugation at 4000 x g for 5 min at room temperature. The supernatant was moved to a clean glass tube, dried under nitrogen, and resuspended in 100 μL MTBE/methanol (1/3, v/v) with 10 mM ammonium formate. 5 μL of each sample was combined to make a pooled quality control (QC) sample and ran every ten samples in the long sequence to monitor retention time and signal intensity drift. The remaining samples (50 μL) were transferred into injection vials for lipidomic analysis.