Our comprehensive "Tired all the time" blood test examines key biomarkers associated with persistent fatigue and low energy levels. This specialized panel analyzes biomarkers including thyroid function, kidney and liver function, vitamin deficiencies, and inflammatory markers. Results provide clinical insights to help identify underlying factors contributing to chronic tiredness.
Advanced Thyroid Function blood test
Sale price
£89.00
Regular price
£119.00
Advanced Kidney (Renal) Function blood test
Regular price
£79.00
Ultimate "Tired all the time" blood test
★★★★★ (4.9/5)
Regular price
£109.00
5 Biomarkers
Turnaround times
At Clinilabs, we pride ourselves on providing our customers with the fastest turnaround times.
You will start receiving dispatched results as soon as they are available and have passed our clinical validation.
Turnaround times vary by test, and by cases. Some results are available within hours while more complex tests can take days.
Please note the turnaround times are a guide and are not a guarantee.
Appointment Required
Schedule at one of our partner clinics
Professional Blood Draw
Performed by certified phlebotomists
Why Clinilabs?
Quick and accurate results
We run our own UKAS and CQC accredited laboratory and participate in 30+ external quality assurance schemes. This means we get you results you can rely on, fast.
High-quality, convenient service
With Clinilabs, you can typically book an appointment and have your results within the same day. No more waiting for weeks or months.
Early detection of health issues
Our seamless, accurate health checks allow you to Identify potential health concerns and act on them before they become serious problems.
Access to doctors
Elevate your health understanding with our comprehensive smart reports. Track, monitor and improve your health over time.
What’s included in this test
Red blood cells
Red Cell Distribution Width (RDW)
RDW measures the variation in size of your red blood cells. It helps identify types of anaemia and can indicate nutrient deficiencies such as iron, B12, or folate.
Clotting status
Mean Platelet Volume (MPV)
MPV reflects the average size of your platelets. It provides insight into platelet production and activity, and can help assess risk of clotting or bleeding disorders.
White blood cells
Monocytes (Mo)
Monocytes assist in clearing infections and dead cells. Elevated levels may indicate chronic inflammation or certain infections.
Lymphocytes (Ly)
Lymphocytes help fight viral infections and are vital to your immune memory. Abnormal levels can be seen in viral illnesses or immune disorders.
Neutrophils (Ne)
Neutrophils are your body’s first line of defense against infection. High levels usually indicate bacterial infections or inflammation.
Basophils (Ba)
Basophils are white blood cells that release histamine during allergic responses. They are rarely elevated but may increase in certain chronic inflammatory conditions.
Eosinophils (Eo)
Eosinophils are a type of white blood cell involved in allergic reactions and fighting parasites. Elevated levels may suggest allergy, asthma, or parasitic infection.
Clotting status
Platelets (PLT)
Platelets are responsible for blood clotting. Low levels may lead to bleeding, while high levels can increase the risk of thrombosis.
Red blood cells
Mean Corpuscular Haemoglobin Concentration (MCHC)
MCHC shows the concentration of haemoglobin in your red blood cells. It's useful in evaluating anaemia types and red cell colour (hypochromia).
Mean Corpuscular Haemoglobin (MCH)
MCH indicates the average amount of haemoglobin in each red blood cell. Abnormal levels help identify different forms of anaemia.
Mean Corpuscular Volume (MCV)
MCV reflects the average size of your red blood cells. It helps classify types of anaemia — whether cells are too large, too small, or just right in size.
Haematocrit (HCT)
HCT shows the percentage of blood made up of red blood cells. It helps assess anaemia, dehydration, and overall blood volume status.
White blood cells
White Blood Cells (WBC)
WBC count indicates immune system activity. Elevated levels can suggest infection or inflammation, while low levels may reflect bone marrow suppression or immune deficiency.
Red blood cells
Red Blood Cells (RBC)
RBC count measures the number of red blood cells in your blood. It's key to assessing oxygen-carrying capacity and diagnosing anaemia or bone marrow issues.
Haemoglobin (Hb)
Haemoglobin carries oxygen from your lungs to the rest of your body. Low levels may indicate anaemia, while high levels could signal dehydration or other blood disorders.
Thyroid health
Free T4
Free T4 gives insight into the level of unbound thyroxine hormone. It’s key for diagnosing thyroid conditions when TSH alone is inconclusive.
Free T3
Free T3 is the active form of triiodothyronine, a thyroid hormone. It’s useful in identifying hyperthyroidism or ineffective thyroid conversion.
TSH
TSH controls the thyroid gland’s hormone production. It’s the most common marker for identifying thyroid dysfunction, such as hypothyroidism.
Hormone health
Prolactin
Prolactin is a hormone primarily involved in lactation but also impacts fertility and menstrual cycles. High levels can suggest pituitary issues.
Vitamins
Vitamin B12
Vitamin B12 is vital for energy production and nerve health. Deficiency can lead to fatigue, memory problems, and anaemia.
Iron markers
Ferritin
Ferritin reflects the body's stored iron. It's a more reliable marker for iron deficiency than serum iron, especially in chronic conditions.
Minerals
Folate
Folate is a B-vitamin essential for DNA synthesis and red blood cell production. It's especially important during pregnancy and for individuals with fatigue or dietary deficiencies.
Liver health
Alanine Aminotransferase (ALT)
Alanine Aminotransferase (ALT) is an enzyme mainly found in the liver. Elevated levels can indicate liver damage from conditions like hepatitis or fatty liver disease.
Bilirubin (Total)
Total bilirubin helps assess liver function and red blood cell breakdown. High levels can cause jaundice and indicate liver or gallbladder issues.
Albumin
Albumin is a major protein in the blood, essential for maintaining fluid balance and transporting nutrients. Low levels can signal liver or kidney disease.
Total protein
Total protein includes albumin and globulin. It's used to assess liver function, kidney health, and nutritional status.
Alkaline phosphatase (ALP)
ALP is an enzyme related to the liver, bones, and bile ducts. It's often tested to investigate liver function or bone disorders.
Aspartate Aminotransferase (AST) (SGOT)
AST is an enzyme found in the liver and muscles. Elevated levels can indicate liver damage, muscle injury, or other underlying conditions.
Gamma-Glutamyl transpeptidase (GGT)
GGT is an enzyme found in the liver and bile ducts. It's commonly tested to evaluate liver function and detect bile duct obstructions or alcohol-related liver damage.
Globulin
Globulin is a group of proteins involved in liver function, immune response, and blood clotting. Abnormal levels can point to infections, liver disease, or immune system disorders.
Kidney health
eGFR (estimated Glomerular Filtration Rate)
eGFR estimates how well your kidneys are filtering waste from your blood. It's a key indicator of kidney function and is especially useful for early detection of chronic kidney disease (CKD).
Bicarbonate
Bicarbonate helps regulate your body’s pH balance. It's tested when evaluating acid-base disorders or respiratory conditions.
Electrolytes
Potassium
Potassium is an essential electrolyte for heart rhythm, muscle contractions, and nerve signals. Imbalances can lead to serious health issues.
Kidney health
Sodium
Sodium is critical for fluid balance, nerve function, and blood pressure regulation. Abnormal levels can point to kidney, adrenal, or hydration issues.
Urea
Urea is a byproduct of protein metabolism, filtered by the kidneys. High levels may indicate impaired kidney function or dehydration.
Chloride
Chloride helps regulate fluid balance, blood pressure, and pH levels. It's usually measured with other electrolytes to assess hydration and kidney function.
Creatinine
Creatinine is a waste product filtered by your kidneys. Measuring creatinine helps assess kidney function and detect early signs of kidney disease.
Blood sugar
Glucose
Glucose testing measures blood sugar levels at a specific point in time. It's essential for screening diabetes and assessing metabolic health during routine check-ups.
Haemoglobin A1c (HBA1c)
HbA1c reflects your average blood glucose over the past 2–3 months. It’s the gold-standard test for diagnosing and managing diabetes.
Inflammation
C Reactive Protein (CRP)
CRP is a marker of inflammation in the body. Elevated CRP may indicate infection, autoimmune disorders, or increased cardiovascular risk.
FAQs
What autoimmune diseases affect the thyroid?
The two main autoimmune conditions that affect the thyroid are Hashimoto's thyroiditis, which leads to an underactive thyroid (hypothyroidism), and Graves' disease, which causes an overactive thyroid (hyperthyroidism). While there is currently no cure for either condition, both can be effectively managed with the right treatment plan — making proper testing essential.
To reach a diagnosis, your doctor will consider your symptoms along with the results of thyroid blood tests to determine whether a thyroid disorder is present.
What is thyroid disease and who is at risk?
It is estimated that around 1 in 20 people may have a thyroid disorder. Several conditions can impact the normal function of the thyroid, including an underactive thyroid (hypothyroidism), an overactive thyroid (hyperthyroidism), autoimmune thyroid disease, thyroid swelling (goitre), nodules, or thyroid cancer.
While anyone can develop a thyroid disorder, certain factors increase the risk. These include being female, being over the age of 50, or having a family history of thyroid problems.
Why check for vitamins and minerals in thyroid profile?
Key vitamins and minerals that support thyroid function and may mimic the symptoms of an underactive thyroid when they are low. These tests include: vitamin D,vitamin B12, folate (vitamin B9) and ferritin – a marker of iron storage.
To provide further insight, we also measure C-reactive protein (CRP), an inflammation marker. This helps interpret your ferritin levels more accurately and offers an indication of whether an autoimmune condition may be contributing to inflammation in your body.
What does a blood test for thyroid function show?
Many standard thyroid tests only measure TSH and FT4, which may not reveal issues with converting FT4 into the more biologically active FT3. It is possible to have normal TSH and FT4 levels but still experience symptoms of an underactive thyroid if FT3 levels are low.
Measuring FT3 is especially useful if you are taking T3-containing medication, such as liothyronine or natural desiccated thyroid (NDT).
TSH plays a key role by stimulating the thyroid gland to produce thyroid hormones, primarily T4. Elevated TSH levels can indicate that your thyroid is not producing enough T4 to meet your body's needs. However, testing TSH alone does not provide a complete picture of thyroid function, which is why we also measure FT4 and FT3 for a more accurate assessment.
Why should I test my thyroid?
If you're experiencing symptoms like unexplained changes in weight, energy levels, mood, skin, or hair, your thyroid could be a contributing factor. The thyroid plays a crucial role in regulating your metabolism, body temperature, and energy production, so even slight imbalances can affect how you feel day to day.
A thyroid blood test can help determine whether your thyroid is functioning properly by measuring key hormones such as TSH, FT4, and FT3. Identifying an underactive (hypothyroidism) or overactive (hyperthyroidism) thyroid early can make a significant difference in managing your symptoms and improving your overall well-being.
What is the thyroid?
The thyroid is a small, butterfly-shaped gland located at the front of the neck. It produces hormones that are essential for regulating your metabolism, energy levels, mood, and more.
Thyroid issues are especially common in women and can affect menstrual cycles, fertility, weight, and emotional wellbeing. When the thyroid produces too much hormone, it causes an overactive thyroid (hyperthyroidism). When it produces too little, it leads to an underactive thyroid (hypothyroidism). Both conditions can significantly impact overall health, particularly during key life stages such as pregnancy, postpartum, and menopause.
Why is thyroid function tested as part of a female hormone panel?
Many symptoms associated with hormonal changes due to ageing, such as fatigue, weight and mood changes can closely resemble those of an underactive thyroid. Thyroid disorders are more common in women and are often caused by autoimmune conditions, where the body's immune system mistakenly attacks the thyroid gland.
Our test helps determine whether your thyroid is functioning normally and whether an autoimmune condition may be contributing to your symptoms.
Even when thyroid hormone levels are within the normal range, elevated thyroid antibodies have been linked to a higher risk of miscarriage. If left untreated, thyroid disorders can also increase health risks for both the mother and the baby during pregnancy.
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