Table 2.
STR genotyping failures by locus
| gDNA Input (ng) | Failure Type | Genotype Failures1 | L12 | L2 | L3 | L4 | L5 | L6 | L7 | L8 | L9 | L10 | L11 | L12 | L13 | L14 | L15 | L16 |
| gDNA | No Amp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Disc. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 1 | No Amp. | 43 | 5 | 0 | 0 | 3 | 0 | 0 | 7 | 0 | 0 | 3 | 5 | 0 | 15 | 1 | 1 | 3 |
| Disc. | 150 | 11 | 3 | 9 | 10 | 4 | 5 | 13 | 9 | 2 | 5 | 22 | 9 | 24 | 7 | 11 | 6 | |
| 10 | No Amp. | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Disc. | 25 | 2 | 0 | 0 | 5 | 1 | 0 | 2 | 0 | 1 | 0 | 7 | 1 | 5 | 0 | 0 | 1 | |
| 25 | No Amp. | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Disc. | 19 | 4 | 1 | 1 | 0 | 0 | 2 | 2 | 0 | 0 | 0 | 2 | 0 | 3 | 2 | 1 | 1 | |
| 50 | No Amp. | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Disc. | 12 | 0 | 0 | 1 | 3 | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 1 | |
| 100 | No Amp. | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| Disc. | 27 | 5 | 5 | 0 | 2 | 0 | 1 | 2 | 1 | 6 | 0 | 0 | 2 | 1 | 2 | 0 | 0 | |
| 200 | No Amp. | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Disc. | 6 | 1 | 1 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | |
| No Amp. | Total | 23 | 10 | 11 | 22 | 5 | 8 | 20 | 12 | 9 | 5 | 33 | 12 | 35 | 12 | 13 | 9 | |
| Discordant | Total | 6 | 0 | 0 | 5 | 0 | 0 | 7 | 0 | 0 | 3 | 5 | 1 | 18 | 1 | 1 | 3 | |
1The number of attempted genotypes for all DNA inputs is N = 864. No amplification (No Amp.) genotypes reduce the number of genotypes available for concordance analysis. 2Loci 1–16 = TPOX, D2S1338, D3S1358, FGA, D5S818, CSF1PO, D7S820, D8S1179, TH01, vWA, D13S2317, D16S539, D18S51, D19S433, D21S11, AMEL.