Results of the proficiency testing of conventional neonatal screening tests in 2019
| Variable | 1st trial | 2nd trial | ||
|---|---|---|---|---|
| No. of institutions | Proportion of correct answers (%) | No. of institutions | Proportion of correct answers (%) | |
| Phenylketonuria | 15 | 180/180 (100) | 14 | 168/168 (100) |
| Galactosemia | 14 | 165/168 (98) | 14 | 167/168 (99) |
| Congenital adrenal hyperplasia | 14 | 164/168 (98) | 14 | 166/168 (99) |
| Maple syrup urine disease | 15 | 180/180 (100) | 14 | 168/168 (100) |
| Homocystinuria | 15 | 178/180 (99) | 14 | 168/168 (100) |
| Congenital hypothyroidism | ||||
| TSH | 14 | 168/168 (100) | 14 | 168/168 (100) |
| T4, total | 8 | 80/80 (100) | 8 | 79/80 (99) |
| T4, free | 1 | 1 | ||
Abbreviations: TSH, thyroid-stimulating hormone; T4, thyroxine.