Increasing Incidence, but Lack of Seasonality, of Elevated TSH Levels, on Newborn Screening, in the North of England

Table 3

Number of cases of elevated TSH levels on newborn screening by month of birth in the Northern Region of England, 1994–2005.

Month	Number of cases
January	14
February	14
March	14
April	17
May	25
June	19
July	16
August	20
September	23
October	20
November	16
December	15