An at-home thyroid health test measuring TSH, Free T4 (FT4) and Vitamin D (25-OH) to assess thyroid function, energy and metabolic balance, with supportive insight into immune and bone health. Ideal for fatigue, weight changes, mood shifts or known thyroid conditions.
The thyroid gland plays a vital role in regulating metabolism, energy, temperature, and mood. When it becomes underactive (hypothyroidism) or overactive (hyperthyroidism), symptoms such as tiredness, weight changes, low mood or anxiety, and skin or hair problems may develop.
The Thyroid Profile from Vitalync Diagnosis measures the key thyroid hormones and includes Vitamin D (25-OH) for added insight into your wider health, immune function, and endocrine balance.
TSH (Thyroid-Stimulating Hormone) — The pituitary “messenger” that tells your thyroid how much hormone to produce. Raised or suppressed levels can signal hypothyroidism or hyperthyroidism.
Free T4 (FT4) — The main circulating thyroid hormone. Measured with TSH, it helps determine the type and severity of thyroid imbalance.
Vitamin D (25-OH) — Important for immune health, bone strength, mood, and hormonal balance. Low levels are common in the UK and may worsen fatigue or general wellbeing.
People with unexplained fatigue, weight gain/loss, or temperature sensitivity
Individuals with mood changes, anxiety, or low energy
Those with a diagnosed thyroid condition needing monitoring
Anyone with a family history or autoimmune risk factors
People wanting to check Vitamin D status alongside thyroid hormones
By testing TSH and FT4 together, this profile clarifies whether your thyroid is functioning normally or showing signs of under/overactivity. Including Vitamin D adds valuable context, helping to:
Identify if thyroid signalling and hormone output are in balance
Explain symptoms such as fatigue, mood changes, or weight fluctuations
Highlight Vitamin D deficiency that may affect energy, immunity, and overall health
Guide lifestyle changes, supplementation, or follow-up care with your clinician
Order online quickly and securely
Visit your nearest Vitalync Diagnosis partner blood draw clinic for professional sample collection (no GP referral needed)
Post your kit back in the prepaid pack to our accredited UK laboratory
Receive results securely online, via email
Some clinicians recommend morning sampling.
If you take thyroid medication, you may be advised to test before your daily dose.
Always follow the instructions provided.