Table 1.
Correlation of anti tTG immunoassay (ELISA) with EMA assays.
| OD Ratio | Negative for EMA |
1 in 30 EMA |
1 in 100 EMA |
1 in 300 EMA |
1 in 1000 EMA |
| OD <1 | 60 (81.1%) |
2 (33.3%) |
9 (42.8%) |
2 (10.5%) |
0 |
| *OD 1–1.4 | 2 (2.7%) |
0 | 1 (4.8%) |
1 (5.3%) |
0 |
| OD >1.4 | 12 (18.9%) |
4 (66.6%) |
11 (52.4%) |
16 (84.2%) |
12 (100%) |
| Total | 74 | 6 | 21 | 19 | 12 |
Number of serum samples are given with and percentages in parentheses. Samples positive for EMA were tested in serial dilutions (1 in 30, 1 in 100, 1 in 300 and 1 in 1000). Anti tTG antibody results are reported as positive (OD ratio >1.4), borderline (OD ratio 1–1.4) and negative (OD ratio <1).