Moreover, data regarding the prevalence of hypothyroidism and autoimmunity in women with GDM are scarce. Hence, the following study was conducted in a tertiary care center to estimate the prevalence of subclinical hypothyroidism in pregnant women, its association with raised anti-TPO antibody titer, and the occurrence of GDM detected at their first antenatal visit. Here, TPO is linked to Autoimmunity.