Detailed Vitamin B12 Analysis
This test is ideal if you’re feeling tired / weak / brain fog / pins and needles. You may also suffer the following conditions: thyroid, Crohn’s or coeliac disease, all which cause struggle to absorb Vitamin B12.
Foggy Brain and Endless Fatigue? Test Your Vitamin B12 Levels at Home – Clear the Haze
Struggling with tiredness, irritability, or that nagging pins-and-needles feeling?
It might not just be stress – low Vitamin B12 could be the culprit, especially if you have absorption issues from thyroid problems, Crohn’s, coeliac, or a plant-based diet. Our at-home Vitamin B12 blood test reveals the truth, helping you address it before symptoms escalate to anaemia or nerve damage.
Common in the UK due to diet and age, deficiency affects millions – but early detection lets you bounce back with simple changes. Get professional accuracy with a nurse visiting you.
The Hidden Toll of Low Vitamin B12 – Why It’s Disrupting Your Life
Vitamin B12 is vital for red blood cell production, brain function, nerve health, and DNA synthesis – powering your energy, mood, and sharpness. It comes from animal products (meat, eggs, dairy, fish), so vegans, vegetarians, or those with gut disorders often fall short. Ageing, medications, or conditions like pernicious anaemia reduce absorption too.
The issue? Symptoms start subtly: fatigue, weakness, brain fog, mouth ulcers, sore tongue, depression, breathlessness, headaches, palpitations, dizziness, pale skin, loss of appetite, or pins and needles. Over time, it leads to serious risks like megaloblastic anaemia (causing exhaustion) or neurological problems (memory lapses, balance issues). Without testing, you’re in the dark – but knowledge empowers quick fixes.
Don’t let B12 drain your days – this test spots deficiency early, preventing escalation.
Spotting Vitamin B12 Deficiency – Is It You?
If hectic lifestyles or health tweaks have you feeling off, these signs could point to low B12:
- Constant fatigue, tiredness, or feeling faint/breathless?
- Brain fog, irritability, depression, or mood swings?
- Pins and needles, numbness, or sore tongue/mouth ulcers?
- Pale skin, headaches, palpitations, or unexplained weight loss?
- Risk factors like vegan diet, gut issues (Crohn’s/coeliac/thyroid), or over 50?
These overlap with other conditions (e.g., Vitamin D low, anaemia), but B12 is often overlooked.
Our customers get clarity:
“The test ended my mystery fatigue – now I’m sharp and energised!” – Tom H., London.
Replenish Your B12 – Proven Steps After Testing
Armed with results, boosting levels is straightforward and effective:
- Dietary Sources: Prioritise B12-rich foods like liver, clams/oysters, beef/lamb, eggs, cheese, or fortified cereals (key for non-meat eaters).
- Supplements: If deficient, your GP may suggest injections or high-dose tablets (e.g., 1,000mcg daily).
- Lifestyle Tweaks: Address absorption blockers – manage gut health, avoid excess alcohol, and retest in 3 months.
- Monitoring: Ideal for at-risk groups; combine with folate checks if needed.
Many see improvements in weeks – energy returns, fog lifts.
Biomarker Covered:
Active Vitamin B12 – Measures the usable form for cells, detecting deficiencies even if total levels seem okay; links to anaemia, nerve health, and energy.
Tackle Your Concerns – We’ve Got You Covered
- Similar to Other Issues? Yes, but this pinpoints B12 specifically – rules out mimics like thyroid or anaemia.
- Reliable for My Risks? Absolutely – ideal for vegans, over-50s, or gut condition sufferers; more accurate than basic tests.
- Hassle-Free? Nurse comes to you – no clinics, full privacy.
- What If Normal? Confirmation your habits work; retest if symptoms persist.
Ready to sharpen your mind and restore your spark?
Testing for Vitamin B12
✅ Over 2,000 tests completed across the UK
✅ Trusted by patients, athletes, and health-conscious professionals
✅ NHS-comparable testing standards
✅ 100% secure and confidential
How often do I need to get tested for Vitamin B12?
We recommend checking your Vitamin B12 levels annually unless you experience any health changes or commence a weight loss programme which involves a restricted diet.
Nurse appointments fill up fast — book now to secure your preferred date.
Other Questions
- Fatigue
- Tiredness
- Mouth ulcers
- Sore tongue
- Irritability
- Depression
- Breathlessness
- Feeling faint
- Headaches
- Palpitations
- Loss of appetite and weight loss
- Pale skin
- Pins and needles sensation
- Dizziness
This blood test is to check on:
- Vitamin B12
For best results (if medically suitable) it is advisable to fast (water is allowed) 12 hours prior to the test.
Collection method: Venous blood
Results available: 1-2 days after the sample has reached the laboratory.
Active Vitamin B12
Vitamin B12 is needed in the production of red blood cells, brain health and to keep nerves healthy and aids in the making of DNA. Low levels may indicate anaemia.


