Table 2 IGFs and related protein levels in the plasma and CSF
| Factors | Plasma | CSF | Ratio (CSF:plasma) | ||
|---|---|---|---|---|---|
| Median (IQR) (ng/ml) | References | Median (IQR) (ng/ml) | References | ||
| IGF1 | 195.3 (165.0 to 224.8) | [57,60-63] | 1.11 (0.92 to 1.48) | [61,64,65] | 1:134 |
| IGF2 | 693.9 (587.2 to 817.0) | [60,62,64,66] | 40.26 (34.6 to 45.4) | [64,67] | 1:17 |
| IGFBP1 | 3.95 (2.53 to 7.01) | [62,63,68] | 0.48 (0.35 to 0.77) | [68] | 1:7 |
| IGFBP2 | 33.97 (14.44 to 51.76) | [60,62] | 77.03 (59.3 to 101.2) | [64,67] | 1:0.4 |
| IGF2R | 99.73 (52.3 to 176.3) | [47,48,69,70] | 6.65 (3.79 to 10.00) | None | 1:17 |