Table 5.
Correlations of IL-6 data generated by high-sensitivity ELISA versus Luminex or MSD assay
| Sample | Correlation coefficient (P value)a |
|||
|---|---|---|---|---|
| Bio-Rad | BioSource | Linco | MSD | |
| All serum samples (n = 36) | 0.13 (0.11) | 0.32 (<0.001) | 0.25 (<0.001) | 0.72 (<0.001) |
| Serum samples with ELISA IL-6 concn ≤10 pg/ml (n = 33) | −0.10 (0.26) | 0.07 (0.44) | −0.08 (0.25) | 0.57 (<0.001) |
| All plasma samples (n = 30) | 0.79 (<0.001) | 0.49 (<0.001) | 0.20 (0.002) | 0.22 (0.10) |
a
Pearson correlation coefficients and P values calculated using data points from all labs and lots after assigning a value of one-half of the LLOQ to all undetectable values.