Subclinical hypothyroidism describes a mildly raised thyroid-stimulating hormone (TSH) level with thyroid hormone (thyroxine) levels still in the normal range, usually without obvious symptoms. It is picked up on blood testing rather than through symptoms alone. Whether to treat subclinical hypothyroidism in someone trying to conceive depends on the exact TSH level, thyroid antibody status, and clinical context, and is a decision made with a clinician, since thresholds for treatment in fertility and pregnancy care are lower than in the general population.
Also known as: mildly raised TSH, borderline thyroid
Related India guides
Sources
- ICMR Standard Treatment Workflows (icmr.gov.in/standard-treatment-workflows-stws)
- Federation of Obstetric and Gynaecological Societies of India (fogsi.org)
Last reviewed: 9 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.