Table 2 Spearman correlations between plasma p-tau217 and CSF Aβ42/Aβ40
From: Effects of certain pre-analytical factors on the performance of plasma phospho-tau217
Plasma p-tau217 | CSF Aβ42/Aβ40 R (p-value, adjusted/unadjusted) |
|---|---|
All (n = 100) | |
Cond 1: thaw at RT, NC | − 0.515 (< 0.001/ < 0.001) |
Cond 2: thaw at RT, C | − 0.636 (< 0.001/ < 0.001) |
Cond 3: thaw on ice, NC | − 0.607 (< 0.001/ < 0.001) |
Cond 4: thaw on ice, C | − 0.652 (< 0.001/ < 0.001) |
Aβ+ (n = 50) | |
Cond 1: thaw at RT, NC | − 0.215 (0.172/0.133) |
Cond 2: thaw at RT, C | − 0.394 (0.010/0.005) |
Cond 3: thaw on ice, NC | − 0.284 0.079/0.046) |
Cond 4: thaw on ice, C | − 0.406 (0.007/0.003) |
Aβ− (n = 50) | |
Cond 1: thaw at RT, NC | 0.230 (0.162/0.108) |
Cond 2: thaw at RT, C | 0.073 (0.615/0.615) |
Cond 3: thaw on ice, NC | 0.210 (0.172/0.143) |
Cond 4: thaw on ice, C | 0.105 (0.511/0.468) |