Quality control metrics (A CytoScan™ Dx example)
Quality control metrix | Method | Acceptable limit | |
---|---|---|---|
Wet bench process | DNA yield after extraction | Fluorometer, sphectrophotometer | ≥ 50 ng/μL or total ≥ 250 ng |
DNA yield after PCR | Fluorometer, sphectrophotometer | ≥ 3 μg/μL | |
DNA purity | Optical density ratio, A260/A280 | 1.7-2.1 | |
DNA size after PCR | Gel electrophoresis (2%) | 150-2,000 bp | |
DNA size after fragmentation | Gel electrophoresis (4%) | 25-125 bp | |
Bioinformatic process | Median absolute pairwise difference (MAPD) | Software | ≤ 0.25 |
SNP QC | Software | ≥ 12 | |
Waviness SD | Software | ≤ 0.12 |