Tiredness and Fatigue (TATT) Blood Test

What we provide

Find the root cause of ongoing tiredness with our TATT blood test. Designed for anyone struggling with low energy, it identifies key imbalances to guide effective treatment.

What is a Tiredness and Fatigue (TATT) Blood Test?

A TATT blood test is designed to investigate the underlying causes of persistent low energy. By analysing key biomarkers such as thyroid function, iron levels, vitamin B12, and vitamin D, it helps identify whether deficiencies or imbalances are contributing to your symptoms. This simple test provides doctors with crucial insight into your overall health, enabling them to uncover possible reasons for fatigue and recommend personalised treatment or lifestyle adjustments to restore your energy and wellbeing.


Who Should Take a TATT Blood Test?

A TATT blood test is an important way to understand why you may be feeling constantly low in energy. By checking key hormones and nutrients, it helps identify whether your fatigue is linked to a medical condition, nutritional deficiency, or lifestyle factor. This gives doctors the clarity needed to recommend the right treatment or preventative care.

You may benefit from a TATT blood test if you are:

  • People with ongoing fatigue: For those who feel exhausted despite getting enough rest.
  • Those experiencing low mood or concentration: Fatigue can affect focus, productivity, and emotional wellbeing.
  • Women with heavy periods: Tests for iron deficiency, which is a common cause of tiredness.
  • Individuals with thyroid concerns: Thyroid imbalances are a frequent cause of unexplained fatigue.
  • Those with unexplained health changes: Identifies whether nutrient deficiencies or metabolic issues may be contributing to symptoms.

Your Journey With Us

Experience a streamlined process designed to support you every step of the way:

1

Initial
Consultation

A consultation, face-to-face or virtual, with a Hormone Health specialist to discuss your medical history, symptoms, and goals.

2

Personalised
Health Plan

Receive a personalised plan combining diagnostic testing, treatment recommendations, and lifestyle guidance tailored to your needs.

3

Follow-Up
Review

Reviews to monitor progress and adjust your plan as necessary, ensuring ongoing support.


What Biomarkers Are Measured for a TATT Blood Test?

A TATT (Tiredness and Fatigue) blood test measures key hormones and nutrients that play an important role in energy levels and overall wellbeing. This information is vital for creating a clear plan to restore energy and improve quality of life.

Key biomarkers include:

  • Thyroid Hormones (TSH, T3, T4): Assess thyroid function, a common cause of tiredness and low energy.
  • Ferritin (Iron Storage): Low levels may indicate iron deficiency anaemia, often leading to fatigue.
  • Vitamin B12 and Folate: Essential for red blood cell production and energy metabolism.
  • Vitamin D: Deficiency can cause fatigue, muscle weakness, and low mood.
  • Glucose and HbA1c: Reveal blood sugar imbalances that may contribute to persistent tiredness.
  • Liver and Kidney Function Markers: Check for metabolic or organ issues that can affect energy levels.
  • Female Hormones (Oestrogen, Progesterone, Testosterone, FSH, LH): Imbalances can cause fatigue, mood changes, sleep disruption, or symptoms associated with perimenopause, menopause, or menstrual cycles.
  • Zinc and Magnesium (optional/additional): Support energy metabolism and overall wellbeing.

Understanding Your TATT Blood Test Results

Your results compare hormone and nutrient levels with expected healthy ranges. These insights show whether your tiredness is linked to deficiencies, hormonal imbalance, or another underlying health concern.

  • Low Ferritin: Suggests iron deficiency anaemia, a common cause of ongoing fatigue.
  • Abnormal Thyroid Hormones: Indicate underactive or overactive thyroid function, both linked to tiredness.
  • Low Vitamin B12 or Folate: Can reduce red blood cell production and cause weakness.
  • Low Vitamin D: May contribute to low mood, fatigue, and muscle weakness.
  • Abnormal Glucose or HbA1c: Point to blood sugar imbalances that drain energy.
  • Female Hormone Imbalances: Low oestrogen, progesterone, or other hormone disruptions can explain fatigue, sleep issues, or energy changes related to menstrual cycles, perimenopause, or menopause.

FAQs

Do I need to fast?

Generally no. Hormone Health only asks patients to fast for two specific panels; you’ll be told in advance if this applies.

Where is the blood taken?

At TDL walk-in near One Welbeck, not in-clinic at Hormone Health.

When will I receive results?

Typically within a few days. A specialist reviews them and we explain findings and next steps.

Is this suitable if I’m planning pregnancy or have menstrual changes?

Yes. Your clinician will advise which thyroid markers and timing are most appropriate.

Can I discuss my results with a clinician?

Absolutely. We’ll go through your results and tailor advice to your goals.


Ready to Take the Next Step?

Ready to get clear answers from the experts? Book your appointment and take control of your health today.

Please note: A blood test must be booked alongside a consultation with a Hormone Health Specialist to ensure results are interpreted accurately by a clinician.

Price: £321.00

Arrange a virtual consultation or visit us at:
Clinic Address: Hormone Health, One Welbeck, 1 Welbeck Street, London W1G 0AR


Get in touch. We can help.

The Hormone Health Specialists are here to advise and support.

Our team Book now

Call: +44 (0)808 196 1901
Email: info@hormonehealth.co.uk