Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA212986

Local Sample ID:	PL244_1320905
Subject ID:	SU002321
Subject Type:	Human
Subject Species:	Homo sapiens
Taxonomy ID:	9606
Age Or Age Range:	50 +/-11
Gender:	Female

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Sample Preparation:

Sampleprep ID:	SP002327
Sampleprep Summary:	Plasma metabolites were extracted from pre-aliquoted biospecimens (15µL) with 45µL of LCMS grade methanol (ThermoFisher) in a 96-well microplate (Eppendorf). Plates were heat sealed, vortexed for 5 min at 750 rpm, and centrifuged at 2000 × g for 10 minutes at room temperature. The supernatant (30µL) was transferred to a 96-well plate, leaving behind the precipitated protein. The supernatant was further diluted with 60µL of 100mM ammonium formate, pH3 (Fisher Scientific). For Hydrophilic Interaction Liquid Chromatography (HILIC) positive ion analysis, 15µL of the supernatant and ammonium formate mix were diluted with 195µL of 1:3:8:144 water (GenPure ultrapure water system, Thermofisher): LCMS grade methanol (ThermoFisher): 100mM ammonium formate, pH3 (Fisher Scientific): LCMS grade acetonitrile (ThermoFisher). For C18 analysis, 15µL of the supernatant and ammonium formate mix were diluted with 90µL water (GenPure ultrapure water system, ThermoFisher) for positive ion mode. Each sample solution was transferred to 384-well microplate (Eppendorf) for LCMS analysis.

Sampleprep ID:

SP002327

Sampleprep Summary:

Plasma metabolites were extracted from pre-aliquoted biospecimens (15µL) with 45µL of LCMS grade methanol (ThermoFisher) in a 96-well microplate (Eppendorf). Plates were heat sealed, vortexed for 5 min at 750 rpm, and centrifuged at 2000 × g for 10 minutes at room temperature. The supernatant (30µL) was transferred to a 96-well plate, leaving behind the precipitated protein. The supernatant was further diluted with 60µL of 100mM ammonium formate, pH3 (Fisher Scientific). For Hydrophilic Interaction Liquid Chromatography (HILIC) positive ion analysis, 15µL of the supernatant and ammonium formate mix were diluted with 195µL of 1:3:8:144 water (GenPure ultrapure water system, Thermofisher): LCMS grade methanol (ThermoFisher): 100mM ammonium formate, pH3 (Fisher Scientific): LCMS grade acetonitrile (ThermoFisher). For C18 analysis, 15µL of the supernatant and ammonium formate mix were diluted with 90µL water (GenPure ultrapure water system, ThermoFisher) for positive ion mode. Each sample solution was transferred to 384-well microplate (Eppendorf) for LCMS analysis.