Table 1 Risk-based screening criteria for thyroid disease in pregnant women included (x) in clinical practice guidelines

Maternal characteristics

 Age > 30 years

x

 BMI ≥ 40 kg/m²

x

x

Reproductive history

 Multiple prior pregnancies (≥ 2)

x

 Previous preterm birth

x

x

 Previous pregnancy loss

x

 Recurrent pregnancy loss (≥ 3)

x

 Fertility treatment

x

x

Family history

 Family history of thyroid disease

x

x

Disease history

 Use of amiodarone, lithium, or recent iodinated contrast

x

 History of radiation therapy of the head and neck area

x

x

 Type 1 diabetes

x

x

 Other autoimmune diseases

x

x

 Previous thyroid disease

x

x

 Known thyroid autoantibody positivity^a

x

x

Disease symptoms or signs

 Symptoms or signs of thyroid disease^a

x

x

 Presence of goiter^a

x

x

Demographics

 Residing in an area of moderate-severe iodine deficiency^b

x