Table 2.
Allelic dropout (ADO) and false allele (FA) rates for five DNA content-based categories, as determined by a pilot study conducted on 18 hair samples at seven microsatellite loci (G1D, G10H, G10L, MU09, MU15, MU23, and MU50). The positive PCR rate as well as the total number of independent PCRs (no. of PCRs) needed to obtain single-locus genotypes at the 99% confidence level are also reported.
| Category | Positive PCR rate | ADO | FA | No. of PCRs | N cat. |
|---|---|---|---|---|---|
| 1–2 hairs | 94.0% (378/402) | 6.3% (18/288) | 5.8% (22/378) | 2 | 9 |
| 3–4 hairs | 97.3% (395/406) | 0.7% (2/299) | 1.3% (5/395) | 1 | 44 |
| 5–6 hairs | 99.1% (347/350) | 0.4% (1/277) | 0.0% (0/347) | 1 | 23 |
| 7–9 hairs | 98.7% (380/385) | 0.0% (0/298) | 0.3% (1/380) | 1 | 98 |
| 10+ hairs | 98.3% (399/406) | 0.0% (0/302) | 0.0% (0/399) | 1 | 78 |
Numbers in parentheses refer to the number of observed cases on the total number of potential cases.
N cat, number of samples of each category included in the final dataset.