Integrity of DNA extracted from urine and saliva. TapeStation results and concentrations (ng/μl) obtained from β-globin qPCR of DNA extracted form urine (A) and saliva (B) on a selection of 6 samples (boys: A, B, C, E; girls: D, F). The corresponding yields (nanograms per microliter biofluid) are for urine (A): sample A, B, C, D, F: undetermined; sample E: 11.1 ng/ml; and for saliva (B): sample A: 8495 ng/ml, sample B: 6244 ng/ml, sample C: 12,577 ng/ml, sample D: 10,008 ng/ml, sample E: 33,527 ng/ml, sample F; 17,977 ng/ml.