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Median concentrations of free and conjugated BPA (ng/ml) among specimens in the 6 experiments on preservation and shipping effects
| Aliquot | Preservative | Agitation | Time (hours) | Free BPA |
Conjugated BPA |
|---|---|---|---|---|---|
| 1 | Y | N | 0 | 4.65 | 1.37 |
| 2 | N | N | 0 | 1.19 | 1.35 |
| 3 | Y | N | 24 | 0.50 | 1.15 |
| 4 | N | N | 24 | 0.26 | 1.36 |
| 5 | Y | Y | 24 | 0.15 | 1.39 |
| 6 | Y | N | 72 | 0.16 | 1.19 |
