Furthermore, they found that TSH levels were above the 80th percentile in all foetuses and FT4 were below the 50th percentile in the majority. (1). In 95 % of cases, Down syndrome is due to non – dysjunction of chromosome 21, while the remaining cases are either due to translocation or mosaicism (2-4). DS is … Continue reading Furthermore, they found that TSH levels were above the 80th percentile in all foetuses and FT4 were below the 50th percentile in the majority