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MB Sample ID: SA125914

Local Sample ID:PlasmaIS1-8_70
Subject ID:SU001567
Subject Type:Human
Subject Species:Homo sapiens
Taxonomy ID:9606

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Treatment ID:TR001582
Treatment Summary:60 µl of plasma was mixed with 300 µl of MeOH and sonicate for 10 min. Subsequently, 1000 µl MTBE was added and the mixture was kept under 25 °C on a shaker (900 rpm) for 30 min. Phase separation was induced by adding 190 µl ultrapure water. Then the mixture was centrifuged at 3000 RCF for 10 min and the 850 µl upper phase were transferred to a new tube. The re-extraction was performed by adding 600 µl MTBE/MeOH/ultrapure water (10:3:2.5, v/v/v) into the lower phase and 500 µl were collected after centrifugation to combine with the previous organic phase. The combined lipid extract solution was aliquoted into 6 tubes (190 µl per tube) to generate plasma lipid matrix. Different concentrations of lipid standard mixture were added to the plasma lipid extract aliquots and dried in a vacuum centrifuge under 45 °C. The dried lipid extracts were resuspended with 30 µl chloroform:MeOH:MQ (60:30:4.5, v/v/v) and further diluted with 90 µl (IPA:ACN:MQ 2:1:1 v/v/v) for LC-MS analysis.