Table 2.
Mass isotopomer distribution and enrichments (after matrix correction) of acids in control samples
| Formate | acetate | Propionate | ||
|---|---|---|---|---|
| Day 1 (n=5, mean%±SD) |
M1 | 1.20±0.07 | 2.25±0.09 | 3.45±0.1 |
| M2 | NA | 0.41±0.03 | 0.46±0.02 | |
| M3 | NA | NA | 0.016±0.001 | |
|
| ||||
| Day2 (n=5, mean%±SD) |
M1 | 1.20±0.06 | 2.25±0.04 | 3.42±0.1 |
| M2 | NA | 0.41±0.04 | 0.44±0.02 | |
| M3 | NA | NA | 0.014±0.002 | |
|
| ||||
| Day3 (n=5, mean%±SD) |
M1 | 1.22±0.02 | 2.24±0.05 | 3.55±0.08 |
| M2 | NA | 0.41±0.03 | 0.42±0.03 | |
| M3 | NA | NA | 0.015±0.002 | |
|
| ||||
| Inter-day average (n=3, mean%±SD) |
M1 | 1.21±0.01 | 2.25±0.07 | 3.47±0.07 |
| M2 | NA | 0.41±0.002 | 0.44±0.02 | |
| M3 | NA | NA | 0.015±0.001 | |
|
| ||||
| Enrichment* (%, after matrix correction) |
M1 | 0.0006 | −0.07 | −0.03 |
| M2 | NA | 0.005 | −0.01 | |
| M3 | NA | NA | 0.001 | |
NA: Not assayed.
*
Enrichment data is inter-day average corrected by matrix method.