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Understand your blood tests

Plain-English guides written and reviewed by our GMC-registered doctors.

Fatigue

Ferritin blood test: what low, normal and high ferritin mean

What does low ferritin mean? What causes high ferritin? A plain guide to your ferritin blood test result, why ranges vary, and what doctors look at next.

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Thyroid

Thyroid blood test in London: options, prices and how fast you get results

Thyroid blood tests in London from £39: TSH, free T4, free T3 and antibodies explained, our prices, how fast results come back and how to prepare.

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Vitamins and minerals

Vitamin blood tests in London: which test to choose and what it costs

Vitamin blood tests in London: which to choose (vitamin D, B12, folate, ferritin), what each costs, and how to test at our Battersea clinic or at home.

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Practical

Same-day blood test results in London: what’s realistic

Can you get blood test results the same day in London? What is realistic, which tests take longer, how to get results faster and when to go to A&E.

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Practical

Where to get a private blood test near Battersea, Vauxhall and Clapham

Where to get a blood test near Battersea, Vauxhall and Clapham: NHS and private options, what to compare, prices, home visits and our clinic details.

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Practical

How much does a private blood test cost in London?

Private blood test prices in London explained: single tests vs panels, clinic vs home visit, and what should be included, such as a doctor's review.

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Health checks

What does a full body MOT blood test actually check?

The markers in an annual health check blood test, what each one tells you, how to prepare, and who benefits most.

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Fatigue

Tired all the time? The blood tests that find the usual causes

Iron, B12, folate, thyroid and vitamin D: the blood tests that look for common causes of tiredness, and when to see a doctor instead.

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Women's health

Menopause blood tests: when they help and when they don't

Why hormone levels can mislead in perimenopause, when an FSH test is useful, and what a blood test can still tell you around the menopause.

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