[Neonatal screening for hypothyroidism. Nord-Picardie regional experience (author's transl)].

The routine T4 determination from filter paper blood spots, with supplementary T.S.H. and T.B.G. determinations on subnormal T4 values, is a reliable method for neonatal hypothyroidism screening. Preliminary results, presently reported, agree with previous studies. However a larger experience is still necessary to decide the best way for mass-screening of congenital hypothyroidism.