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. 2009 Feb 19;7:16. doi: 10.1186/1477-7827-7-16

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).