TG and preeclampsia: However, it is only the participants with severe preeclampsia/eclampsia when compared to controls who had a significantly lower median estimated daily iodine intake (respectively 178.2 and 362.2 μg/day, p = 0.004), urine iodine/urine creatinine ratio (respectively 12.5 and 30.7 g/mol, p = 0.017), serum FT4 (12.8 and 14.2 pmol/L respectively, p < 0.001) and FT3 (4.0 and 4.8 pmol/L respectively, p < 0.001) but significantly higher median serum thyroglobulin (32.9 and 19.4 μg/L respectively, p < 0.001) (Table 2).