Increasing Incidence, but Lack of Seasonality, of Elevated TSH Levels, on Newborn Screening, in the North of England
TSH newborn screening base, assay methodology, and cut-off values during the study period.
|1994–March 1998||April 1998–February 2003||March 2003–March 2005||April 2005–present|
|(Manual)|| (Bayer)||(Perkin Elmer)||(Perkin Elmer)|
|TSH cut-off (mU/L)||20||10||6||6|