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MB Sample ID: SA053269
| Local Sample ID: | C-10UV9-S-00 |
| Subject ID: | SU000946 |
| Subject Type: | Plasma samples |
| Subject Species: | Homo sapiens |
| Taxonomy ID: | 9606 |
| Age Or Age Range: | Pediatric samples |
| Human Trial Type: | Observational |
| Species Group: | Human |
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Sample Preparation:
| Sampleprep ID: | SP000953 |
| Sampleprep Summary: | Samples were prepared for metabolomics analysis using established methods (Johnson et al. (2010). Analyst; Go et al. (2015). Tox Sci). Prior to analysis, urine aliquots were removed from storage at -80°C and thawed on ice. Each cryotube was then vortexed briefly to ensure homogeneity, and 50 μL was transferred to a clean microfuge tube. Immediately after, the urine was treated with 100 μL of ice-cold LC-MS grade acetonitrile (Sigma Aldrich) containing 2.5 μL of internal standard solution with eight stable isotopic chemicals selected to cover a range of chemical properties. Following addition of acetonitrile, urine was equilibrated for 30 min on ice, upon which precipitated proteins were removed by centrifuge (16.1 ×g at 4°C for 10 min). The resulting supernatant (100 μL) was removed, added to a low volume autosampler vial and maintained at 4°C until analysis (<22 h). |
| Sampleprep Protocol ID: | HRM_SP_082016_01 |
| Sampleprep Protocol Filename: | EmoryUniversity_HRM_SP_082016_01.pdf |
| Sampleprep Protocol Comments: | Date effective: 30 July 2016 |
| Extraction Method: | 2:1 acetonitrile: sample followed by vortexing and centrifugation |
| Sample Spiking: | 2.5 uL [13C6]-D-glucose, [15N,13C5]-L-methionine, [13C5]-L-glutamic acid, [15N]-L-tyrosine, [3,3-13C2]-cystine, [trimethyl-13C3]-caffeine, [U-13C5, U-15N2]-L-glutamine, [15N]-indole |
