Table 1. Recovery for all sample types.

Extraction method
						modified	modified
Sample type	Griffiths 0.5 g	Powersoil™ 0.5 g	Ultraclean™ 0.5 g	FastDNA® Spin kit 0.5 g	QIAamp Stool kit 0.5 g	Griffiths 0.1 g	FastDNA® Spin Kit 0.1 g
Badger faeces	0.00 (0.00–0.00)	0.00 (0.00–0.00)	0.00 (0.00–0.00)	0.06 (0.00–0.12)	0.00 (0.00–0.00)	10.87 (5.73–14.67)	21.48 (13.94–48.82)
Badger faeces (10× diluted)	0.05 (0.00–0.12)	0.00 (0.00–0.00)	0.00 (0.00–0.00)	0.00 (0.00–0.05)	0.00 (0.00–0.00)	n.a.	n.a.
Cow slurry	0.19 (0.13–0.28)	0.00 (0.00–0.01)	0.00 (0.00–0.00)	0.07 (0.00–0.17)	0.00 (0.00–0.00)	n.a.	11.48 (8.72–23.43)
Kilkenny soil	18.72 (9.13–63.26)	23.92 (8.45–32.65)	1.55 (0.8–4.41)	85.04 (30.25–100)	12.53 (11.13–16.11)	n.a.	51.05 (16.12–62.72)
Stockton soil	6.97 (3.37–21.42)	8.82 (4.58–9.93)	0.89 (0.58–1.8)	23.08 (10.51–30.2)	1.86 (0.68–3.95)	n.a.	30.79 (6.57–43.96)
Warwick soil	16.23 (6.7–21.28)	18.07 (10.3–26.93)	10.51 (5.83–18.8)	79.79 (49.31–100)	9.99 (7.89–12.03)	2.91 (0.32–9.59)	49.16 (27.58–73.54)

The recovery (percentage) shown is the median value of the top 4 spikes, interquartile range values are presented in brackets. n.a.: not available.