Tired All the Time
A comprehensive 50-marker fatigue profile assessing blood health, thyroid function, iron status, vitamins, metabolism, kidney function and inflammation.
Turnaround time
2-3 days
Biomarkers count
50
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Overview of the Tired All the Time Test
The Tired All the Time test is a comprehensive 50-biomarker blood profile designed to investigate common biological contributors to persistent fatigue and reduced energy.
Fatigue is a highly non-specific symptom. It can be associated with anaemia, Iron deficiency, thyroid dysfunction, vitamin deficiencies, abnormal blood sugar regulation, inflammation, kidney or liver problems and many other medical or non-medical factors.
For that reason, this profile looks across several systems rather than relying on one or two commonly requested markers.
It includes a Full Blood Count with a five-part white-cell differential, kidney function and electrolytes, liver and protein markers, thyroid hormones and thyroid antibodies, Glucose, HbA1c, Insulin, detailed Iron studies, Vitamin D, Vitamin B12, Folate, Magnesium, Adjusted Calcium and two inflammatory markers.
This provides a broad laboratory overview while still recognising that normal blood results do not exclude all possible causes of fatigue.
Sleep disorders, medication, mental health, chronic pain, infection and other conditions may also contribute to persistent tiredness.
The Tired All the Time profile costs £175.
Professional blood collection is available in clinic for an additional £35 or through an at-home phlebotomy visit for an additional £60.
What Does the Tired All the Time Test Check?
The Tired All the Time profile measures 50 biomarkers covering blood-cell health, kidney and liver function, thyroid health, glucose regulation, Iron status, vitamins, minerals and inflammation.
Haemoglobin - Measures the oxygen-carrying protein within red blood cells.
Red Blood Cell Count - Measures the number of circulating red blood cells.
Haematocrit (HCT) - Measures the proportion of blood volume occupied by red blood cells.
Mean Cell Volume (MCV) - Measures the average size of red blood cells.
Mean Cell Haemoglobin (MCH) - Measures the average amount of Haemoglobin within each red blood cell.
Mean Cell Haemoglobin Concentration (MCHC) - Measures the average concentration of Haemoglobin within red blood cells.
Red Cell Distribution Width (RDW) - Measures variation in red blood cell size.
White Cell Count - Measures the total number of circulating white blood cells.
Neutrophils - Measures a white-cell type particularly involved in bacterial infection and inflammatory responses.
Lymphocytes - Measures white blood cells involved in adaptive immune responses.
Monocytes - Measures immune cells involved in inflammation and clearance of damaged cells and microorganisms.
Eosinophils - Measures white cells associated particularly with allergy and selected parasitic responses.
Basophils - Measures a smaller white-cell population involved in inflammatory and allergic responses.
Platelets - Measures cells involved in normal blood clotting.
Mean Platelet Volume (MPV) - Measures the average size of circulating Platelets.
Urea - Measures a metabolic waste product influenced by kidney function, hydration and protein metabolism.
Creatinine - Measures a waste product commonly used when assessing kidney filtration.
eGFR - Provides an estimate of kidney filtration.
Sodium - Measures an important electrolyte involved in fluid and nerve function.
Potassium - Measures an electrolyte essential for normal muscle, nerve and heart function.
Chloride - Measures an electrolyte involved in fluid and acid-base balance.
Bicarbonate - Provides information about acid-base regulation.
Phosphate - Measures circulating Phosphate.
Alanine Aminotransferase (ALT) - Measures an enzyme associated particularly with liver-cell health.
Aspartate Aminotransferase (AST) - Measures an enzyme found in liver, muscle and other tissues.
Alkaline Phosphatase (ALP) - Measures an enzyme associated particularly with liver, bile ducts and bone.
Gamma-Glutamyltransferase (GGT) - Measures an enzyme associated with liver and biliary health.
Total Bilirubin - Measures Bilirubin processed by the liver.
Albumin - Measures a major circulating protein produced by the liver.
Total Protein - Measures the total concentration of major circulating proteins.
Thyroid Stimulating Hormone (TSH) - Measures the pituitary signal controlling thyroid hormone production.
Free T3 - Measures the free circulating fraction of Triiodothyronine.
Free T4 - Measures the free circulating fraction of Thyroxine.
Anti-Thyroglobulin Antibody - Detects antibodies directed against Thyroglobulin.
Anti-Thyroid Peroxidase Antibody - Detects antibodies directed against Thyroid Peroxidase.
Glucose - Measures circulating blood Glucose at the time of collection.
HbA1c - Reflects average Glucose exposure over approximately the previous two to three months.
Insulin - Measures circulating Insulin and adds information about glucose regulation.
Iron - Measures circulating Iron.
Total Iron Binding Capacity (TIBC) - Measures the blood's capacity to bind and transport Iron.
Transferrin - Measures the principal Iron-transport protein.
Transferrin Saturation - Indicates the proportion of Transferrin Iron-binding sites occupied by Iron.
Ferritin - Measures the principal Iron-storage protein.
Vitamin D - Measures Vitamin D status.
Vitamin B12 - Measures Vitamin B12 status.
Folate - Measures Vitamin B9 status.
Magnesium - Measures circulating Magnesium.
Calcium (Adjusted) - Provides a Calcium result adjusted for Albumin concentration.
C-Reactive Protein (CRP) - Measures a non-specific marker of systemic inflammation.
High-Sensitivity C-Reactive Protein (hs-CRP) - Measures lower concentrations of CRP and can provide additional information about low-grade inflammation.
Who May Benefit From the Tired All the Time Test?
The profile may be useful where fatigue is persistent, recurrent or unexplained and a broad laboratory assessment is preferred.
People who remain tired despite adequate sleep - Several common physiological contributors are assessed.
People with fatigue and brain fog - Nutritional, thyroid, metabolic and inflammatory markers may provide useful information.
People experiencing hair thinning alongside fatigue - Iron, thyroid, vitamin and general-health biomarkers are included.
People with reduced exercise tolerance - Anaemia, Iron deficiency and metabolic abnormalities are among several possible causes.
People with unexplained weight changes - Thyroid and metabolic markers provide additional context.
People feeling unusually cold - Thyroid and Iron-related abnormalities may be relevant.
People experiencing dizziness or weakness - Blood Count, Iron, Glucose and electrolyte markers can provide useful information.
People with prolonged fatigue after illness - Inflammation and organ-function markers can contribute to broader assessment.
People wanting a detailed baseline before further medical review - Fifty biomarkers provide wide laboratory coverage.
Symptoms and Reasons to Consider the Tired All the Time Test
Persistent fatigue can arise from many overlapping causes.
Constant tiredness despite sleep - May justify broader medical investigation.
Brain fog or poor concentration - Thyroid, nutritional, metabolic and other factors may contribute.
Hair thinning or hair loss - Ferritin, thyroid and vitamin status may be relevant.
Dizziness or weakness - Anaemia, low Iron, Glucose abnormalities and other conditions can contribute.
Pale skin - Can occur with anaemia.
Cold intolerance - May occur with thyroid dysfunction or anaemia.
Frequent energy crashes - Glucose and Insulin regulation may provide additional information.
Poor recovery from exercise or illness - Nutritional, metabolic and inflammatory factors may be relevant.
Persistent fatigue lasting several weeks or longer - Appropriate clinical assessment should be considered, particularly when symptoms are worsening.
Persistent fatigue can sometimes be a symptom of conditions that are not identified through this panel.
Severe breathlessness, chest pain, fainting, unexplained significant weight loss, neurological symptoms or rapidly worsening illness requires appropriate medical assessment.
How to Prepare
Do not stop prescribed medication or medically recommended supplements solely for testing unless instructed by your clinician.
How to Book Your Tired All the Time Test
The Tired All the Time profile can be booked privately with professional blood collection.
Choose the Tired All the Time Test
Select the £175 50-biomarker fatigue profile.
Select your collection option
Choose in-clinic phlebotomy for +£35 or an at-home phlebotomy visit for +£60.
Attend your appointment
A trained healthcare professional collects the required blood specimens.
Laboratory analysis
Fifty biomarkers across blood, thyroid, metabolic, nutritional, kidney, liver and inflammatory health are assessed.
Receive your results securely
Your completed report is delivered securely.
When Will I Receive My Results?
Results are generally expected within approximately 2–3 working days after laboratory receipt.
The report is released once all included biomarkers have completed analysis and authorisation.
Understanding Your Results
There is no single blood marker that explains all fatigue.
Instead, interpretation looks for patterns across several systems.
Low Haemoglobin or abnormal red-cell indices may support further assessment for anaemia.
Low Ferritin or abnormal Iron studies can indicate depleted or altered Iron status.
TSH, Free T3, Free T4 and thyroid antibodies provide information about thyroid function and autoimmune thyroid activity.
Glucose, HbA1c and Insulin provide different information about blood-sugar regulation.
CRP and hs-CRP provide inflammatory information but do not identify the underlying cause of inflammation.
If results are normal but significant fatigue persists, further clinical assessment may still be appropriate.
Why Book With London Blood Tests?
London Blood Tests provides broad fatigue-focused testing across several common biological contributors to low energy.
50 biomarkers - Multiple physiological systems are assessed within one profile.
Detailed thyroid assessment - TSH, Free T3, Free T4 and two thyroid antibodies are included.
Detailed Iron status - Ferritin, Iron, TIBC, Transferrin and Transferrin Saturation are assessed.
Vitamins and Magnesium included - Vitamin D, Vitamin B12, Folate and Magnesium form part of the profile.
Glucose, HbA1c and Insulin included - Several aspects of metabolic health are assessed.
Kidney and liver health included - Major organ-function markers form part of the test.
Two inflammatory measurements - CRP and hs-CRP are included.
Flexible phlebotomy - Choose in-clinic collection for +£35 or an at-home phlebotomist for +£60.
Clear pricing - The Tired All the Time profile costs £175, with collection charged separately.
Private Tired All the Time Blood Test in London
London Blood Tests provides the Tired All the Time profile in London for £175.
The test measures 50 biomarkers across blood health, thyroid function, Iron status, vitamins, metabolism, kidney and liver function and inflammation.
Professional blood collection is available in clinic for +£35 or through an at-home phlebotomy visit for +£60.
Results are generally expected within approximately two to three working days.