Table 1. Confirmation of the presence of a domoic acid (DA)-specific antibody in naturally exposed California sea lion (Zalophus californianus) serum samples as detected via an indirect enzyme-linked immunosorbent assay (ELISA).
| CSL-ID # | Absorbance Ratio | Seizures (yes/no) | Admit Date | Serum Collection Daya |
| W-9759 | 9.88 | Yes | 7/10/10 | 1 |
| W-9864 | 7.59 | Yes | 10/11/10 | 0 |
| W-9876 | 2.85 | Yes | 10/16/10 | 1 |
| W-10047 | 1.72 | Yes | 8/11/11 | 1 |
| W-6920 | 1.51 | No | 6/30/06 | 1 |
| W-7923 | 1.27 | No | 11/10/08 | 49 |
| W-10046 | 1.23 | Yes | 8/11/11 | 1 |
| W-6990 | 1.23 | No | 10/16/06 | 7 |
| W-10035 | 1.16 | Yes | 8/5/11 | 2 |
| W-10045 | 1.12 | Yes | 8/10/11 | 1 |
| W-10044 | 1.11 | Yes | 8/10/11 | 1 |
| W-9114 | nd | Yes | 10/7/09 | 18 |
| W-8739 | nd | Yes | 7/21/09 | 4 |
| W-10026 | nd | Yes | 8/5/11 | 3 |
| W-8032 | nd | No | 1/16/09 | 32 |
| W-6980 | nd | No | 8/15/06 | 3 |
| W-7899 | nd | No | 10/15/08 | 35 |
| C- 1 | nd | No | na | na |
| C- 2 | nd | No | na | na |
| C- 3 | nd | No | na | na |
| C- 4 | nd | No | na | na |
| C- 5 | nd | No | na | na |
CSL = California sea lion; W = Wild; C = control healthy animals born and raised in captivity at Sealife Park Hawaii with presumably no history of domoic acid exposure; Absorbance Ratio = sample serum absorbance÷(mean control serum absorbance+3SD); Values >1 indicate presence of DA-specific antibody; nd = not detectable; na = not applicable;
a
Number of days after admission to the Marine Mammal Center before serum was collected.