Tired All the Time? These Blood Tests Can Help Find Out Why
Author: Tharb Faisl
Are you constantly waking up tired, struggling to get through the day, or feeling mentally and physically drained for no apparent reason?
Fatigue isn’t normal, and it’s often not just lifestyle-related. At Marylebone Diagnostic Centre, we offer fatigue blood tests designed to uncover hidden causes such as nutrient deficiencies, hormone imbalances, and inflammation.
What Can Cause Ongoing Fatigue?
Fatigue can be caused by a variety of issues, including:
- Anaemia (low iron or B12)
- Thyroid disorders
- Vitamin D deficiency
- Hidden inflammation
- Poor immune function
- Hormonal imbalances
- Blood sugar imbalances
Many of these causes are treatable once identified through the right fatigue blood tests.
Recommended Blood Tests for Fatigue
Our fatigue blood tests are designed to help pinpoint the underlying causes of your tiredness. Here’s a breakdown of common tests:
| Test Panel | What It Tells You |
|---|---|
| Full Blood Count (FBC) | Checks for anaemia, infection, immune status |
| Iron Studies & Ferritin | Assesses iron levels, common in women & vegans |
| Vitamin B12 & Folate | Essential for energy and neurological function |
| Vitamin D | Low levels = low energy, aches, mood issues |
| Thyroid Panel (TSH, T4, T3) | Regulates metabolism and energy use |
| CRP (C-Reactive Protein) | Detects inflammation or underlying immune issues |
| Blood Glucose / HbA1c | Unstable sugar levels = energy crashes |
We can also tailor tests based on your specific symptoms and health history.
Why Choose Marylebone Diagnostic Centre?
Convenient, private clinic near Paddington
No referral needed – book directly
Same-day blood testing with results in 1–3 days
Clear, easy-to-understand results – no medical jargon
Tests performed to the Marylebone High Standard for accuracy and care
Whether you’ve been feeling exhausted for weeks or just want to rule out common causes of tiredness, we’re here to help you find the answers — fast.
Real Patient Questions
Q: Could low vitamin D or iron really be causing my tiredness?
A: Absolutely! Low vitamin D and iron are some of the most common hidden causes of fatigue.
Q: Do I need to fast before these tests?
A: Only for the blood glucose test. We’ll let you know if fasting is required.
Q: Will someone explain the results to me?
A: Yes! You’ll receive a detailed, easy-to-understand report, and our team is available to help guide you through your next steps.
Book Your Fatigue Blood Test Today
Stop guessing and start finding out what’s really going on. Book your fatigue blood test today at marylebonediagnosticcentre.com, and get the clarity you need to feel better.