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MB Sample ID: SA045057
| Local Sample ID: | ESP-1086_084 |
| Subject ID: | SU000838 |
| Subject Type: | Human |
| Subject Species: | Homo sapiens |
| Taxonomy ID: | 9606 |
| Species Group: | Human |
Select appropriate tab below to view additional metadata details:
Subject:
| Subject ID: | SU000838 |
| Subject Type: | Human |
| Subject Species: | Homo sapiens |
| Taxonomy ID: | 9606 |
| Species Group: | Human |
Factors:
| Local Sample ID | MB Sample ID | Factor Level ID | Level Value | Factor Name |
|---|---|---|---|---|
| ESP-1086_084 | SA045057 | FL009039 | Control | CaseStatus |
| ESP-1086_084 | SA045057 | FL009039 | - | MECFS |
| ESP-1086_084 | SA045057 | FL009039 | - | IBS |
Collection:
| Collection ID: | CO000832 |
| Collection Summary: | Subjects included 50 cases and 50 controls from the Chronic Fatigue Initiative (CFI) Cohort (28) recruited at 4 sites across the US who met the 1994 CDC Fukuda and/or Canadian consensus criteria for ME/CFS. |
| Sample Type: | Blood |
| Blood Serum Or Plasma: | Plasma |
Treatment:
| Treatment ID: | TR000852 |
| Treatment Summary: | Subjects included 50 cases and 50 controls from the Chronic Fatigue Initiative (CFI) Cohort (28) recruited at 4 sites across the US who met the 1994 CDC Fukuda and/or Canadian consensus criteria for ME/CFS. |
Sample Preparation:
| Sampleprep ID: | SP000845 |
| Sampleprep Summary: | 1.Thaw each 20 μL plasma aliquot at room temperature (see Aliquoting TEDDY samples SOP). Once thawed (~10min) place liquid plasma samples on ice. 2. Add 225 μL cold “MeOH with QC mix” (see SOP “QC mix for LC-MS lipid analysis”). Keep MeOH on ice during extraction 3. Vortex each sample for 10s, keeping the rest on ice during all the extraction. 4. Add 750 μL of cold MTBE with 22:1 CE, keep MTBE on ice during extraction 5. Vortex for 10s 6. Shake for 6min at 4°C in the orbital mixer. 7. Add 188 μL room temperature LC/MS grade water. 8. Vortex for 20 s 9. Centrifuge for 2 min @ 14,000 rcf (12300 rpm) 10. Remove supernatant, splitting into two aliquots of 350 μL, keeping one at –20°C for backup 11. Dry samples to complete dryness in the speed vacuum concentration system |
| Sampleprep Protocol Filename: | SP_SOP_Extraction_of_plasma.pdf |
Combined analysis:
| Analysis ID | AN001286 |
|---|---|
| Analysis type | MS |
| Chromatography type | GC |
| Chromatography system | Leco Pegasus III GC |
| Column | Restek Rtx-5Sil (30m x 0.25mm,0.25um) |
| MS Type | EI |
| MS instrument type | GC-TOF |
| MS instrument name | Leco Pegasus III GC TOF |
| Ion Mode | POSITIVE |
| Units | Counts |
Chromatography:
| Chromatography ID: | CH000902 |
| Instrument Name: | Leco Pegasus III GC |
| Column Name: | Restek Rtx-5Sil (30m x 0.25mm,0.25um) |
| Column Pressure: | 7.7 PSI (initial condition) |
| Column Temperature: | 50 - 330°C |
| Flow Rate: | 1 ml/min |
| Injection Temperature: | 50°C ramped to 250°C by 12°C/s |
| Sample Injection: | 0.5µl |
| Oven Temperature: | 50°C for 1 min, then ramped at 20°C/min to 330°C, held constant for 5 min |
| Transferline Temperature: | 230°C |
| Washing Buffer: | Ethyl Acetate |
| Sample Loop Size: | 30 m length x 0.25 mm internal diameter |
| Randomization Order: | Excel generated |
| Chromatography Type: | GC |
MS:
| MS ID: | MS001179 |
| Analysis ID: | AN001286 |
| Instrument Name: | Leco Pegasus III GC TOF |
| Instrument Type: | GC-TOF |
| MS Type: | EI |
| Ion Mode: | POSITIVE |
| Ion Source Temperature: | 250°C |
| Ionization Energy: | 70eV |
| Mass Accuracy: | Nominal |
| Source Temperature: | 250°C |
| Scan Range Moverz: | 85-500 |
| Scanning Cycle: | 17 Hz |
| Scanning Range: | 80-500 Da |
| Skimmer Voltage: | 1850 |
