Table 3.
Application of all three methods on independent dataset. Fifteen different CSF samples were analyzed with hemoglobin ELISA, Combur10-Test Strip, and LC-MS. The respective results were classified to the defined contamination levels as listed in Table 2. Samples that were assigned by all three approaches to the same blood level are highlighted in light gray, and samples that were assigned to the same level by two approaches are marked in dark gray.
| Sample | ELISA | strip | LC-MS |
|---|---|---|---|
| CSF 5 | 1 | 1 | 1 |
| CSF 6 | 1 | 1 | 1 |
| CSF 7 | 10 | 1 | 10 |
| CSF 8 | 1 | 1 | 1 |
| CSF 9 | 10 | 1 | 1 |
| CSF 10 | 10 | 10 | 10 |
| CSF 11 | 20 | 20 | 20 |
| CSF 12 | 20 | 20 | 20 |
| CSF 13 | 20 | 10 | 10 |
| CSF 14 | 10 | 10 | 10 |
| CSF 15 | 20 | 40 | 40 |
| CSF 16 | 20 | 20 | 20 |
| CSF 17 | 20 | 20 | 20 |
| CSF 18 | 30 | 40 | 40 |
| CSF 19 | 20 | 40 | 30 |