Wellbeing and Nutrition

Persistent tiredness, low mood, poor concentration, brittle nails, hair loss and slow recovery are the classic signs of a deficiency, and iron, vitamin D, B12 and folate are the usual suspects, with thyroid function and blood count close behind. These tests measure them directly, singly or together, so you can correct what is low rather than guess with supplements. A full blood count and a blood sugar check sit alongside them.

Which test do I need?

Start from your situation. Every test is analysed in our own UKAS-accredited laboratory.

I am tired all the time40 markers: iron, vitamins, thyroid, blood count, liver, kidney and HbA1c
Tired All the Time Blood Test £109 · Same day results
I want my vitamins and minerals checkedvitamin D, B12, folate, iron and the key minerals
Vitamin & Mineral Blood Test £109 · Same day results
I want an affordable general checkorgans, metabolism, iron and inflammation
Essential Health Check £79 · Same day results
I want my blood count checked15 markers, same day
Full Blood Count / Complete Blood Count (FBC/CBC) Blood Test £50 · Same day results
I want to check my blood sugarglucose and HbA1c; fasting recommended
Advanced Diabetes Test £55 · Same day results
I suspect a food or environmental allergy300 allergens, results in 5 days
ALEX³ Allergy Test (300 Allergens) £399 · results in 5 days

Not sure? Use the test finder →

Frequently asked questions

Answers for this range. Each test page has its own questions too.

Why check vitamin D?
Low vitamin D is one of the most common deficiencies in the UK. The test supports diagnosis of deficiency, safe supplementation, and monitoring of long-term therapy, and is used in bone health assessment, chronic fatigue and some autoimmune conditions.
What are the symptoms of vitamin D deficiency?
Low vitamin D often causes no obvious symptoms. When it does, people report tiredness, low mood, aching bones or muscles and frequent infections. Because the symptoms are vague, a blood test is the only reliable way to know your level.
What are signs of low Vitamin B12?
Common symptoms include fatigue, weakness, tingling in the hands or feet, memory problems, and difficulty concentrating. Severe deficiency can cause nerve damage if left untreated.
What is the difference between an iron test and a ferritin test?
Serum iron changes through the day; ferritin reflects stored iron. This panel measures both, plus transferrin, transferrin saturation, TIBC and UIBC, so it can tell true iron deficiency apart from anaemia of chronic disease and iron overload.
Which nutrition blood test should I take for tiredness?
Iron (ferritin), vitamin D, B12 and folate, and thyroid function are the usual first checks for persistent tiredness, alongside a full blood count. The Tired All The Time panel covers all of them in one same-day draw; single tests are there if you already know what you want measured.

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