Table 7.
Comparison of reported paraprotein and total Ig concentrations (g/L) between South Australian laboratories.
| Sample 1 | Sample 2 | Sample 3 | Sample 4 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Paraprotein | Total IgA | Paraprotein | Total IgA | Paraprotein | Total IgG | Total IgM | Paraprotein | Total IgA | |
| SA Lab 1 | 8 | 7.9 | 35 | 46.8 | 10 | 14.8 | 9.3 | 5 | 6.5 |
| SA Lab 2 | 8 | 7.6 | 36 | 46.7 | 11 | 16.3 | 9.4 | 7 | 7.2 |
| Mean (g/L) | 8 | 7.8 | 36 | 46.8 | 11 | 15.6 | 9.4 | 6 | 6.9 |
| SD (g/L) | 0.0 | 0.2 | 0.7 | 0.1 | 0.7 | 1.1 | 0.1 | 1.4 | 0.5 |
| CV% | 0.0 | 2.7 | 2.0 | 0.2 | 6.7 | 6.8 | 0.8 | 23.6 | 7.2 |
|
| |||||||||
| Sample 5 | Sample 6 | Sample 7 | Sample 8 | ||||||
| Paraprotein | Total IgA | Paraprotein | Total IgA | Paraprotein | Total IgA | Paraprotein | Total IgA | ||
|
| |||||||||
| SA Lab 1 | 22 | 24.8 | 9 | 6.3 | 9 | 11.1 | 8 | 5.5 | |
| SA Lab 2 | 30 | 26.7 | 9 | 6.8 | 10 | 10.8 | 7 | 5.6 | |
| Mean (g/L) | 26 | 25.8 | 9 | 6.55 | 10 | 11.0 | 8 | 5.6 | |
| SD (g/L) | 5.7 | 1.3 | 0.0 | 0.4 | 0.7 | 0.2 | 0.7 | 0.1 | |
| CV% | 21.8 | 5.2 | 0.0 | 5.4 | 7.4 | 1.9 | 9.4 | 1.3 | |
*
Sample 3 – two co-migrating bands of IgG and IgM