Table 2. Summary of biomarker characteristics.
| ADRC | ADNI | UW | |
| Aß42 | 564±244 (175–1295) | 170±56 (53–300) | 131±40 (61–231) |
| Tau | 376±241 (88–1358) | 98±56 (28–495) | 72±51 (9–281) |
| ptau181 | 63±32 (24–241) | 18±8 (8–115) | 63±34 (14–281) |
CSF Aß42, tau and ptau181 levels for the Washington University Alzheimer's Disease Reseach Center (ADRC), Alzheimer's Disease Neuroimaging Initiative (ADNI) and for the University of Washington, Seattle (UW). For each phenotype the mean in pg/ml with the standard deviation and range is shown.