Subclinical Hypothyroidism Treatment Eligibility

Current TSH (mUI/L)

Patient Age (Years)

Subclinical Hypothyroidism is defined by an elevated TSH with a normal FT4. Treatment decisions are highly individualized, especially in the elderly.

Guidelines & Evidence

Verified

Last Review: 2026

When to Use

Patients with incidentally discovered elevated TSH and normal FT4.

Deciding whether to initiate levothyroxine in mild TSH elevations (4.5–10 mUI/L).

Evaluating symptomatic patients with "borderline" thyroid function.

Last Comprehensive Review: 2026

Recent Journal Updates

British J HaematologyJul 17, 2026

Infectious adverse events associated with novel Bruton tyrosine kinase (BTK) inhibitors in adults with chronic lymphocytic leukaemia: A meta‐analysis of randomized controlled trials

Clinical Context

We think this has broad domain relevance to Subclinical Hypothyroidism Eligibility.

WHO NewsJul 15, 2026

New WHO guidelines: up to 45% of dementia risk could be prevented or delayed

Clinical Context

We think this has broad domain relevance to Subclinical Hypothyroidism Eligibility.

WHO NewsJun 23, 2026

WHO urges scale up of newborn screening to improve early detection and care of birth defects

Clinical Context

We think this might be relevant to the clinical guidance for Subclinical Hypothyroidism Eligibility.

Subclinical Hypothyroidism Treatment Eligibility

When to Use

When to Use

How it Works

TSH ≥ 10 mUI/L

TSH 4.5 – 9.9 mUI/L

Clinical Pearls

Natural History

The TRUST Trial

The Evidence

Primary Source

Clinical practice guidelines for hypothyroidism in adults.

Thyroid Hormone Therapy for Older Adults with Subclinical Hypothyroidism (TRUST Trial).

Recent Journal Updates

Subclinical Hypothyroidism Treatment Eligibility

When to Use

When to Use

How it Works

TSH ≥ 10 mUI/L

TSH 4.5 – 9.9 mUI/L

Clinical Pearls

Natural History

The TRUST Trial

The Evidence

Primary Source

Clinical practice guidelines for hypothyroidism in adults.

Thyroid Hormone Therapy for Older Adults with Subclinical Hypothyroidism (TRUST Trial).

Recent Journal Updates