Tired All The Time

If you’re feeling tired all the time, struggling with low energy, or experiencing unexplained symptoms such as tired all time nausea, dizziness, or even when your eyes feel heavy and tired all the time, our comprehensive test package is designed to help uncover the root cause.

This panel of blood tests investigates key areas of your health – from red blood cell function and iron status to thyroid, vitamin, kidney, and glucose balance. By analysing these markers, we can provide valuable insights into why you may be always tired all the time and help guide the right steps towards feeling better.

Biomarkers Included

Blood Count – checks oxygen delivery and immune balance

• Haemoglobin – measures oxygen-carrying protein in red blood cells.
• Haematocrit – percentage of blood volume made up by red blood cells.
• Mean Cell Haemoglobin (MCH) – average amount of haemoglobin per red blood cell.
• Mean Cell Haemoglobin Concentration (MCHC) – average concentration of haemoglobin.
• Mean Cell Volume (MCV) – average size of red blood cells.
• Red Blood Cell Count (RBC) – number of red blood cells circulating.
• Basophil, Lymphocyte, Eosinophil, Monocyte, Neutrophil Counts inflammation.
• White Blood Cell Count (WBC) – overall immune cell levels.
• Platelet Count – important for blood clotting and healing.

Kidney Health – assesses waste filtration and electrolyte balance

• Creatinine & eGFR – evaluate kidney function.
• Chloride, Sodium, Potassium, Phosphate, Magnesium – essential minerals that support energy, nerves, and muscles.
• Urea – waste product used to measure kidney efficiency.
• Cystatin C – sensitive marker for kidney performance.

Nutritional Health – highlights vitamin and mineral deficiencies

• Calcium (Adjusted) – crucial for muscle and nerve function.
• Albumin – protein status and marker of overall nutrition.
• Iron, Ferritin, Transferrin, TIBC, Transferrin Saturation – iron storage and transport, vital for energy.
• Folic Acid – supports red blood cell production and DNA repair.
• Vitamin B12 – vital for energy, nerves, and blood health.
• Vitamin D – important for immunity, energy, and bone strength.

Thyroid Health – checks hormones that regulate metabolism and energy

• Thyroid Stimulating Hormone (TSH) – signals the thyroid to produce hormones.
• Free Tri-iodothyronine (T3) & Free Thyroxine (T4) – active thyroid hormones that control metabolism.
• Anti-Thyroglobulin & Anti-Thyroid Peroxidase Antibodies – detect autoimmune thyroid disorders.

Bone Health

• Parathyroid Hormone (PTH) – regulates calcium and bonestrength.

Inflammation & Infection

• C-Reactive Protein (CRP) – detects inflammation or infection that can contribute to fatigue.

Diabetes & Energy Regulation

• Glucose & HbA1c – measure blood sugar control and diabetes risk.
• Insulin & C-Peptide – assess insulin production and balance.

This complete package goes beyond a standard check-up. Unlike basic tired all the time blood tests normal, this profile digs deeper into the causes of lack of energy feeling tired all the time and related symptoms, such as being light headed and tired all time.

Understanding your blood test results is the first step towards tackling fatigue, dizziness, or persistent low energy. Here’s what each group of markers means, and the typical UK reference ranges (may vary slightly by laboratory).

Blood Count

Checks oxygen delivery, red/white blood cell balance, and clotting.

• Haemoglobin (Hb) – 130–170 g/L (men), 120–150 g/L (women). Low = anaemia, common cause of tiredness.
• Haematocrit (Hct) – 0.40–0.54 (men), 0.36–0.47 (women). Low= anaemia, high = dehydration or polycythaemia.
• Mean Cell Volume (MCV) – 83–101 fL. High = B12/folate deficiency, low = iron deficiency.
• Mean Cell Haemoglobin (MCH) – 27–32 pg. Reflects average haemoglobin per cell.
• Mean Cell Haemoglobin Concentration (MCHC) – 320–360 g/L. Indicates cell colour/density.
• Red Blood Cell Count (RBC) – 4.5–6.5 ×10⁹/L (men), 3.9–5.6 ×10⁹/L (women).
• White Blood Cell Count (WBC) – 4–11 ×10⁹/L. High = infection/inflammation, low = immune suppression.
• Neutrophils – 2.0–7.5 ×10⁹/L.
• Lymphocytes – 1.0–3.0 ×10⁹/L.
• Monocytes – 0.2–0.8 ×10⁹/L.
• Eosinophils – 0.0–0.4 ×10⁹/L.
• Basophils – 0.0–0.1 ×10⁹/L.
• Platelets – 150–400 ×10⁹/L. Low = bruising/bleeding, high = inflammation.

Kidney Health

Monitors hydration, waste clearance, and electrolytes.

• Creatinine – 64–104 µmol/L (men), 49–90 µmol/L (women).
• eGFR – >90 mL/min/1.73m² is normal. Declining values suggest kidney impairment.
• Urea – 2.5–7.8 mmol/L.
• Sodium (Na) – 133–146 mmol/L. Imbalance = fatigue, confusion.
• Potassium (K) – 3.5–5.3 mmol/L. High/low = muscle weakness, heart rhythm issues.
• Chloride (Cl) – 95–108 mmol/L.
• Phosphate – 0.8–1.5 mmol/L.
• Magnesium – 0.7–1.0 mmol/L.
• Cystatin C – 0.5–1.2 mg/L. Sensitive kidney marker.

Nutritional Health

Detects deficiencies linked to feeling tired all the time.

• Albumin – 35–50 g/L.
• Calcium (adjusted) – 2.2–2.6 mmol/L.
• Iron – 10–30 µmol/L.
• Ferritin – 30–400 µg/L (men), 13–150 µg/L (women). Low = iron deficiency.
• Transferrin – 2.0–3.6 g/L.
• TIBC (Total Iron Binding Capacity) – 45–72 µmol/L.
• Transferrin Saturation – 20–50%.
• Folic Acid – >7.0 nmol/L. Low = anaemia, fatigue.
• Vitamin B12 – 190–950 ng/L. Deficiency = neurological fatigue, brain fog.
• Vitamin D (25-OH) – >50 nmol/L optimal, <25 nmol/L deficient.

Thyroid Health

Controls metabolism and energy.

• TSH (Thyroid Stimulating Hormone) – 0.4–4.0 mU/L. High = underactive thyroid, low = overactive.
• Free T4 (Thyroxine) – 9–25 pmol/L.
• Free T3 (Tri-iodothyronine) – 3.5–7.8 pmol/L.
• Anti-Thyroid Peroxidase Antibodies (Anti-TPO) – <35 IU/mL. Raised = autoimmune thyroiditis.
• Anti-Thyroglobulin Antibodies – <115 IU/mL.

Bone Health

• Parathyroid Hormone (PTH) – 1.6–6.9 pmol/L. Helps regulate calcium; imbalance may cause weakness and fatigue.

Inflammation & Infection

• C-Reactive Protein (CRP) – <5 mg/L. High = infection or chronic inflammation (which can make you feel drained).

Diabetes & Energy Regulation

• Glucose (fasting) – 3.9–5.8 mmol/L.
• HbA1c – 20–41 mmol/mol (normal), 42–47 mmol/mol (pre-diabetes), ≥48 mmol/mol (diabetes).
• Insulin (fasting) – 2–25 mU/L.
• C-Peptide – 0.3–2.3 nmol/L. Indicates insulin production.

Your results will be clearly explained in your report, with reference to these ranges. Even if your tired all the time blood tests normal, having this reassurance is valuable. If anything is out of range, our clinicians can guide you on whether diet, lifestyle changes, or further medical assessment is needed.

When you’re struggling with fatigue, dizziness, or the constant worry of being tired all the time, you want answers you can trust. At Medilabs London, we go beyond routine checks to provide comprehensive insights into your health. Here’s why patients choose us:

1. Specialist Expertise

Our tests are carefully designed by medical professionals with experience in identifying the root causes of tiredness, low energy, and related health concerns.

2. Comprehensive Testing

Unlike basic blood tests for tired all the time, our package investigates multiple areas, including thyroid, iron status, kidney health, and vitamins, so you don’t have to guess what’s wrong.

3. Fast, Reliable Results

We work with UK-accredited laboratories, delivering accurate results quickly. Whether your results come back as tired all the time blood tests normal or highlight an issue, you’ll receive a detailed, easy-to-understand report.

4. Personalised Care

We don’t just hand you numbers. Our clinicians explain what your results mean, helping you understand whether your lack of energy feeling tired all the time is linked to anaemia, thyroid imbalance, or lifestyle factors.

5. Convenient London Location

Our modern clinic is designed for comfort and efficiency, making your blood test quick, safe, and stress-free.

6. Trusted by Patients

Medilabs is known for professional, compassionate service. Many people who once felt always tired all the time have found clarity through our packages.

7. Guidance Beyond the Test

Your journey doesn’t stop with results. If your blood test shows areas needing attention, we’ll guide you towards the right next steps, from further testing to nutritional or medical support.

Choosing Medilabs means choosing expertise, clarity, and care. If you’ve been battling with feeling tired all the time and dizzy, experiencing tired all time nausea, or noticing your eyes feel heavy and tired all the time, our package is designed to help you find the answers you need.