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Concordance tables between plasma and serum for light chain analysis
| Assay | Comparison | Identical % | Serum below ref. range/plasma within ref. range | Serum within ref. range/plasma above ref. range |
|---|---|---|---|---|
| Kappa | EDTA vs. serum | 84 | 11 | 5 |
| Kappa | Lithium heparin PST vs. serum | 86 | 10 | 4 |
| Lambda | EDTA vs. serum | 98 | 2 | 0 |
| Lambda | Lithium heparin PST vs. serum | 98 | 1 | 1 |
| Kappa/lambda ratio | EDTA vs. serum | 95 | 1 | 4 |
| Kappa/lambda ratio | Lithium heparin PST vs. serum | 95 | 1 | 4 |
