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Table 2 IGFs and related protein levels in the plasma and CSF

From: Insulin-like growth factors and related proteins in plasma and cerebrospinal fluids of HIV-positive individuals

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
  1. IQR, interquartile range.