Table 5.
Comparison of reported paraprotein and total Ig concentrations (g/L) between Queensland laboratories.
| Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Paraprotein* | Total IgA | Paraprotein | Total IgA | Paraprotein | Total IgA | Paraprotein | Total IgA | Paraprotein | Total IgA | |
| Qld Lab 1 | 79 | 60.0 | 26 | 19.0 | 30 | 30.0 | 15 | 11.0 | 14 | 18.0 |
| Qld Lab 2 | 74 | 59.0 | 34 | 15.0 | 22 | 31.0 | 7 | 6.0 | 10 | 15.0 |
| Qld Lab 3 | 76 | 53.0 | 19 | 12.5 | 28 | 24.0 | 8 | 6.7 | 12 | 13.0 |
| Qld Lab 4 | 76 | ND | 21 | 14.0 | 30 | ND | 14 | 7.0 | 16 | ND |
| Mean (g/L) | 76 | 57.3 | 25 | 15.1 | 28 | 28.3 | 11 | 7.7 | 13 | 15.3 |
| SD (g/L) | 2.1 | 3.8 | 6.7 | 2.8 | 3.8 | 3.8 | 4.1 | 2.3 | 2.6 | 2.5 |
| CV% | 2.7 | 6.6 | 26.7 | 18.4 | 13.8 | 13.4 | 37.1 | 29.4 | 19.9 | 16.4 |
|
| ||||||||||
| Sample 6 | Sample 7 | Sample 8 | Sample 9 | Sample 10 | ||||||
| Paraprotein | Total IgG | Paraprotein | Total IgM | Paraprotein | Total IgM | Paraprotein | Total IgG | Paraprotein | Total IgG | |
|
| ||||||||||
| Qld Lab 1 | 11 | 10.0 | 12 | 4.0 | 30 | 36.0 | 48 | 35.0 | 11 | 6.0 |
| Qld Lab 2 | - | 12.0 | 3 | 5.0 | 28 | 26.0 | 40 | 29.0 | 2 | 7.0 |
| Qld Lab 3 | 9 | 11.0 | 7 | 5.0 | 29 | 36.0 | 46 | 40.0 | 4 | 6.0 |
| Qld Lab 4 | 12 | 11.0 | 12 | ND | 32 | ND | 49 | 43.0 | 11 | ND |
| Mean (g/L) | 11 | 11.0 | 9 | 4.7 | 30 | 32.7 | 46 | 36.8 | 7 | 6.3 |
| SD (g/L) | 1.5 | 0.8 | 4.4 | 0.6 | 1.7 | 5.8 | 4.0 | 6.1 | 4.7 | 0.6 |
| CV% | 14.3 | 7.4 | 51.3 | 12.4 | 5.7 | 17.7 | 8.8 | 16.7 | 67.0 | 9.1 |
*
IgA paraprotein migrated in the gamma region and was used as a gating control;
ND, not done