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Comparison between existing techniques and GMR-based sensors.
| ELISA | Bead-based optical detection |
Protein Chip | GMR sensors | |
|---|---|---|---|---|
| Multiplex level | 1 | ~ 20 | ~ 100 – 1000 | 4 – 64 |
| Limit of Detection (pM) | ~ 1 | 5 | > 10 | ~ 0.01 |
| Dynamic range (logs) | 3 | 3 | < 2 | 6 |
| Sample volume (µl) | 50 – 200 | 100 | > 100 | 10 – 50 |
