Thyroid Function Tests (TFTs)

Interpretation of thyroid blood tests.

Reviewed by Dr Kola Tytler MBBS CertHE MBA MRCGP (General Practitioner)
Last reviewed: 21 October 2025
EndocrinologyBiochemistryGeneral Practice

Clinical Guidelines

CKS: Hyperthyroidism
National
CKS: Hypothyroidism
National
NICE guideline [NG145]: Thyroid disease: assessment and management
National
2024 European Thyroid Association Guidelines on diagnosis and management of resistance to thyroid hormone
Local
Assessment | Diagnosis | Hypothyroidism | CKS | NICE
Local
Consensus Guidelines Update by ESPE (European Society for Paediatric Endocrinology)
Local
European Society for Paediatric Endocrinology Consensus Guidelines on Screening, Diagnosis, and Management of Congenital Hypothyroidism
Local
Hyperthyroidism and Hypothyroidism in Pregnancy Guideline
Local