Table 1. The sensitivity of IGF signaling antibody arrays.
| Protein | Sensitivity (pg/ml) | Protein | Sensitivity (pg/ml) |
| IGFBP-1 | 7.8 | IGF-1 | 266 |
| IGFBP-2 | 146 | IGF-2 | 43 |
| IGFBP-3 | 1756 | IGF-1R | 92 |
| IGFBP-4 | 1344 | IGF-2R | 52 |
| IGFBP-6 | 84 | Insulin | 1314 |
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