We all feel tired occasionally – but if you’re tired all the time (TATT) and it doesn’t improve with rest, it may be a sign that something else is going on. Fatigue is one of the most common reasons people see a GP, and often a simple blood test can provide answers.
At OneMedicine in Edgbaston, Birmingham, we offer fast, doctor-led blood testing to help uncover the cause of your tirednes
Why Might You Feel Tired All the Time?
There are many possible reasons, from lifestyle factors like poor sleep or stress, to medical conditions such as anaemia, thyroid problems, or vitamin deficiencies. The good news is that many causes can be detected with straightforward blood tests.
For more general information, you can also read the helpful NHS guide on tiredness and fatigue
Blood Tests for Fatigue
Here are the most common tests we recommend when investigating ongoing tiredness:
✔ Full Blood Count (FBC) – checks for anaemia or infection
✔ Iron Studies & Ferritin – looks for iron deficiency
✔ Vitamin B12 & Folate – low levels can cause fatigue and low mood
✔ Vitamin D – deficiency is common in the UK and linked to tiredness and muscle aches
✔ Thyroid Function Test – underactive thyroid is a classic cause of fatigue
✔ Liver & Kidney Function Tests – checks your organs are working properly
✔ HbA1c (Diabetes Check) – screens for diabetes and prediabetes
✔ Inflammatory Markers (CRP/ESR) – picks up signs of underlying inflammation or autoimmune disease
✔ Coeliac Screen – fatigue can sometimes be the only symptom of gluten sensitivity
Depending on your symptoms, your doctor may also suggest hormone tests (e.g. testosterone, cortisol) or infection screens.
How Long Do Blood Results Take?
A common question patients ask us is: how long does a blood test result take?
- With the NHS, routine results may take a few days to a few weeks, depending on the test.
- At OneMedicine, many results are available within 24 hours, so you don’t have to wait and worry.
- If something urgent is detected, your we will contact you promptly.
Knowing how long do blood results take can ease anxiety and help you plan your next steps.
What Happens Next?
The Doctor will go through your results with you and explain what they mean in plain language. If a deficiency or imbalance is found, treatment can often make a big difference within weeks. If further investigation is needed, we can arrange scans or referrals quickly.
Why Choose OneMedicine?
✔ Same-day GP appointments in Birmingham
✔ Rapid blood test turnaround (many results the same day, most results in 24hours)
✔ Doctor-led explanations – no confusing reports
✔ Personalised follow-up and treatment plan
Take the Next Step
If you’re feeling tired all the time and want answers, book an appointment with OneMedicine Edgbaston today. A simple set of blood tests could help uncover the cause – and get you back to feeling like yourself again.
Book a Blood Test Appointment
