Table 3. Results of the Endotoxin Assay in the Samples of Cell Culture Medium and Human Serum.
| sample | spiked (EU mL–1) | detected (EU mL–1) | recovery (%) | relative error (%) | 
|---|---|---|---|---|
| DMEM | 0.2 | 0.21 | 105.0 | 3.9 | 
| 0.5 | 0.47 | 94.0 | 4.2 | |
| 1 | 1.08 | 108.0 | 5.0 | |
| Serum | 0.2 | 0.22 | 110.0 | 4.7 | 
| 0.5 | 0.53 | 106.0 | 3.8 | |
| 1 | 0.96 | 96.0 | 2.6 |