MOESM2 of Analysis of steroid hormones and their conjugated forms in water and urine by on-line solid-phase extraction coupled to liquid chromatography tandem mass spectrometry

Additional file 2: Figure S1. Method validation for precision (intra-day). C = 200 ng L−1, n = 10 for 1 mL sample volume and C = 50 ng L−1, n = 7 for 5 mL sample volume.