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| recovery
(%) |
|||
|---|---|---|---|
| additives to CSF | parameter | OXA | OXB |
| 20 mM citric acid/0.1% tween 80 | syringe and tube transfer | 100.6 ± 9.4 | 91.2 ± 4.7 |
| tube transfer (3 times) | 105.2 ± 12.1 | 94.1 ± 6.8 | |
| spike recovery | 107.1 ± 3.8 | 95.8 ± 1.2 | |
| none | spike recovery | 41.6 ± 3.9 | 40.2 ± 3.5 |
Recovery (%) of OXA and OXB (mean ± SD, N = 3). The addition of 20 mM citric acid and 0.1% (w/v) Tween 80 (final concentrations) prevented nonspecific binding of OXA and OXB.
