Tiredness

Age restriction on blood tests

We're unable to offer blood tests for those under the age of 18 unless it is part of a routine GP appointment and the clinician believes it suitable.

The biomarkers that are tested in a tiredness and fatigue blood test include:

• Albumin: A protein the liver produces that helps transport substances in the blood. Low levels can indicate liver damage or disease.
• Alkaline phosphatase (ALP): An enzyme found in the liver and bone. Elevated levels can indicate liver disease or bone-related conditions.
• Ant-Tg: Detects and measures the presence of anti-thyroglobulin antibodies. It helps diagnose autoimmune thyroid diseases and predict future thyroid dysfunction.
• Anti Thyroid peroxidase antibody (Anti-TPO): An antibody targeting the thyroid peroxidase enzyme. The test measures Anti-TPO levels in the blood, aiding in diagnosing autoimmune thyroid disorders.
• C-peptide: A biomarker measured by a test to evaluate insulin production. It helps diagnose and monitor diabetes, distinguishing between type 1 and type 2, and aiding in treatment decisions.
• C-reactive protein (CRP): This biomarker measures the level of inflammation in the body. Elevated levels of CRP can indicate an underlying inflammatory condition that may contribute to fatigue.
• Calcium: Essential mineral for bone health and bodily functions. Calcium test measures blood levels to assess bone health and nerve/muscle function and detect disorders.
• Cystatin C: A protein biomarker that assesses kidney function. It measures cystatin C levels in the blood, aiding in the early detection of kidney dysfunction or monitoring existing kidney disease.
• Ferritin: A biomarker reflecting iron levels in the body. The test measures ferritin levels to diagnose iron deficiency or excess, monitor treatment, and evaluate conditions like anaemia and liver disease.
• Folic Acid: Essential B-vitamin aiding in cell growth and development. The folic acid test measures its levels to assess deficiency or monitor supplementation.
• Free T3: A measurement of the active form of thyroid hormone triiodothyronine (T3) that is not bound to proteins. The test assesses the level of unbound T3 in the blood, helping diagnose and monitor thyroid disorders.
• Free thyroxine (FT4): The main hormone produced by your thyroid that regulates the energy your body uses. Free T4 measures the amount of T4 that's available for your body to use. This test can help check for hyperthyroidism or hypothyroidism.
• Full Blood Count: Click arrow for further details
• Basophils: A white blood cell that plays a role in the body's immune response to allergies.
• Eosinophils: A white blood cell that plays a role in the body's immune response to allergies and parasitic infections.
• Haematocrit: The proportion of red blood cells in the blood can indicate whether a person is anaemic or dehydrated.
• Haemoglobin: The protein in red blood cells that carries oxygen throughout the body.
• Lymphocytes: A white blood cell that plays a key role in the body's immune system, fighting viral infections and cancers.
• MCH: The average amount of haemoglobin in each red blood cell.
• MCHC: The average concentration of haemoglobin in each red blood cell.
• MCV: The average size of red blood cells, which can help diagnose specific types of anaemia.
• Monocytes: A white blood cell that plays a role in the immune system by engulfing and digesting foreign particles, such as bacteria and viruses.
• MPV: The average size of platelets in the blood can indicate whether a person is at risk of bleeding or clotting disorders.
• Neutrophils: A white blood cell that fights bacterial infections.
• Platelet count: The total number of platelets in the blood responsible for clotting and preventing bleeding.
• RDW: The variation in the size of red blood cells can help diagnose specific types of anaemia.
• Red cell count: A count of red blood cells in the blood, indicating whether a person is anaemic.
• White cell count: A count of the total number of white blood cells in the blood, which can indicate infection or inflammation in the body.
• Glucose: Vital energy source for the body. Raised glucose levels can detect insulin resistance.
• HbA1c: A form of haemoglobin chemically modified by binding glucose molecules. The HbA1c level can be expressed as a percentage of total haemoglobin. It is an indicator of pre-diabetes and diabetes.
• Insulin: Hormone regulating blood sugar levels. Insulin test measures its concentration in the blood to diagnose diabetes, evaluate treatment, and monitor insulin-producing pancreatic function.
• Iron: This biomarker measures the level of iron, which is necessary for the production of haemoglobin. Low levels of iron can cause anaemia and contribute to fatigue.
• Kidney function(U+Es): Biomarkers tested are electrolytes (such as sodium, potassium, and chloride) and urea. These biomarkers provide valuable information about the balance of salts, fluids, and waste products in the body, helping assess the overall health and function of the kidneys.
• Magnesium: An essential mineral involved in various physiological processes. Magnesium test measures its levels in the blood, aiding in diagnosing magnesium deficiencies or imbalances.
• Phosphate: An essential mineral involved in various bodily functions. The test measures phosphate levels in the blood, helping assess bone health, kidney function, and electrolyte balance. High or low levels may indicate underlying conditions or imbalances.
• Thyroid-stimulating hormone (TSH): This biomarker measures the level of TSH produced by the pituitary gland. It stimulates the thyroid gland to produce thyroid hormones. Abnormal levels of TSH can indicate thyroid disease, which can cause fatigue.
• Total Iron-Binding Capacity (TIBC): Measures the blood's ability to bind iron. The test helps diagnose and monitor conditions related to iron metabolism and anaemia. TIBC reflects the body's iron-carrying capacity, aiding in evaluating iron deficiency or overload.
• Transferrin saturation (TSAT): Measures the amount of iron bound to transferrin in the blood. This test assesses iron metabolism and helps diagnose iron deficiency or overload. TSAT provides insights into iron status and guides treatment decisions.
• Transferrin: A protein that transports iron in the blood. Transferrin test measures its levels to assess iron status and diagnose conditions like anaemia. It helps evaluate iron deficiency and monitor response to treatment.
• Vitamin B12: This biomarker measures vitamin B12, essential for red blood cell production and nerve function. Low levels of vitamin B12 can cause anaemia and contribute to fatigue.
• Vitamin D: A vital fat-soluble vitamin that supports bone, muscle, and immune system health. Our bodies can produce most of the Vitamin D they need through exposure to sunlight. Still, we can also obtain it from specific foods and supplements.