Table 5 Agreement analysis of the biomarkers’ relative concentrations between eye fluids and plasma
|  | Aβ40 | Aβ42 | t-Tau | ptau181 | GFAP | NfL | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Comparison | Bias | 95% LOA | Bias | 95% LOA | Bias | 95% LOA | Bias | 95% LOA | Bias | 95% LOA | Bias | 95% LOA |
Aqueous—Plasma | 229.2 | 504.7 | 8.5 | 18.0 | -14.2 | 142.0 | -7.2 | 47.4 | -1796.4 | 13,296.8 | -16.5 | 762.0 |
Vitreous—Plasma | -258.6 | 1079.7 | -18.6 | 63.6 | -33.3 | 319.7 | -11.7 | 42.0 | -17,863.1 | 87,989.4 | -364.9 | 3517.7 |
Tears—Plasma | 311.0 | 11.2 | 12.2 | 1.9 | -89.9 | 383.9 | -31.2 | 200.7 | NA | NA | NA | NA |