Comparison of the results obtained from the two laboratories testing by the same method
| Method | No of analyses compared | No of analyses discordant (%) |
| Junction fragment by Southern blot | 92 | 2 (2.2) |
| Junction fragment by PCR | 91 | 0 (0) |
| Microsatellite analysis | 79 | 2 (2.5) |
| STS dosage with capillary electrophoresis | 89 | 0 (0) |
| STS dosage with PAGE | 83 | 4 (4.8) |