Metabolomics Workbench : NIH Data Repository

MB Sample ID: SA169325

Local Sample ID:	OD10
Subject ID:	SU001902
Subject Type:	Human
Subject Species:	Homo sapiens
Taxonomy ID:	9606
Age Or Age Range:	53 ± 15
Weight Or Weight Range:	116 ± 25
Gender:	Male and female

Select appropriate tab below to view additional metadata details:

Sample Preparation:

Sampleprep ID:	SP001908
Sampleprep Summary:	30 µl of serum of each sample were randomized and vortex-mixed with 400 µl of MeOH at -20 °C containing 1 ppm of the following internal standards: heptadecanoic acid, valine-d8, succinic acid-d4 and glutamic acid-d5 (Sigma-Aldrich). Samples were incubated on ice for 30 min and centrifuged (9600 rpm, 3 min). After that, 350 µl (400 µl for urine) of the supernatant of each serum sample were transferred to a V-shaped GC-vial. Stability and reproducibility of the system were checked with pooled samples prepared colleting from all the extracts the same quantity of the remained supernatant. Afterwards, pooled samples were vortex-mixed, centrifuged and 350 µl (400 µl for urine) of the supernatant of each aliquot were transferred to a V-shaped GC-vial. Derivatization. Supernatants were evaporate to dryness in a nitrogen flow. Then, samples were converted to trimethylsilyl (TMS) and methoxime (MEOX) derivate(s). Consequently, 25 µl of MOX reagent in pyridine (20 mg/ml) were added, samples were vortex-mixed and incubated for 60 min at 45 °C. After oximation, silylation was performed adding 25 µl of MSTFA, samples were vortex-mixed and incubated for 60 min at 45 °C.

Sampleprep ID:

SP001908

Sampleprep Summary:

30 µl of serum of each sample were randomized and vortex-mixed with 400 µl of MeOH at -20 °C containing 1 ppm of the following internal standards: heptadecanoic acid, valine-d8, succinic acid-d4 and glutamic acid-d5 (Sigma-Aldrich). Samples were incubated on ice for 30 min and centrifuged (9600 rpm, 3 min). After that, 350 µl (400 µl for urine) of the supernatant of each serum sample were transferred to a V-shaped GC-vial. Stability and reproducibility of the system were checked with pooled samples prepared colleting from all the extracts the same quantity of the remained supernatant. Afterwards, pooled samples were vortex-mixed, centrifuged and 350 µl (400 µl for urine) of the supernatant of each aliquot were transferred to a V-shaped GC-vial. Derivatization. Supernatants were evaporate to dryness in a nitrogen flow. Then, samples were converted to trimethylsilyl (TMS) and methoxime (MEOX) derivate(s). Consequently, 25 µl of MOX reagent in pyridine (20 mg/ml) were added, samples were vortex-mixed and incubated for 60 min at 45 °C. After oximation, silylation was performed adding 25 µl of MSTFA, samples were vortex-mixed and incubated for 60 min at 45 °C.