Mercury blood test in Chiswick

What the test measures

Mercury is a metal with no useful role in the body. People are mainly exposed through diet, particularly large predatory fish such as swordfish, shark and marlin, which concentrate methylmercury. Other sources include some skin-lightening creams bought outside regulated markets, certain traditional remedies, and occupational exposure in dentistry, laboratories or industry.

A blood mercury level mostly reflects recent exposure, especially to methylmercury from fish. Inorganic and metallic mercury are often better assessed with a urine sample, so your practitioner may suggest additional testing depending on the likely source.

The price includes the sample taken at our Chiswick clinic, analysis at the Randox accredited laboratory, a practitioner review of your result, and a GP feedback report on request.

Who it is for

• You eat swordfish, shark, marlin or fresh tuna often and would like to check your level.
• You have used a skin cream or remedy that may contain mercury.
• Your work involves mercury, for example in a laboratory, dental surgery or industrial setting.
• You are planning a pregnancy and want to understand any exposure from diet.
• You have symptoms such as tingling, tremor or memory change and possible exposure has been raised.

Understanding your result

Your report compares your mercury level with the laboratory reference range. A raised result most often reflects a diet high in larger fish, and levels usually fall gradually once intake is reduced. Much higher levels may point to a less common source and need prompt medical follow-up.

Because blood mercury changes with recent intake and does not fully capture every form of mercury, a result is a starting point for discussing your diet and exposure history with your practitioner, not a diagnosis of poisoning.

Preparing for your test

Fasting is not needed. It helps to tell us how often you eat fish and which kinds, along with any creams, remedies or supplements you use and your occupation. If you have dental amalgam fillings, there is no need to change anything before the test. We confirm any further preparation when you book.

For a wider look at your health alongside an exposure check, Omnia Signature is our most comprehensive panel. You can also compare every blood test and price in Chiswick.

Questions

How much is a mercury blood test in Chiswick?

The Mercury test costs £189. This includes the blood sample at our Chiswick clinic, analysis at the Randox accredited laboratory, a practitioner review of your result, and a GP feedback report on request.

Is a blood or urine test better for mercury?

Blood is generally the more useful sample for methylmercury from fish and for recent exposure. Urine is often preferred for long-term exposure to inorganic or metallic mercury. Your practitioner can advise which suits your situation.

Should I be worried about my amalgam fillings?

The NHS states that amalgam fillings are safe for most people. If you are concerned, discuss it with your dentist rather than having fillings removed, as removal itself can release mercury vapour.

How can I lower a high mercury level?

For most people the main step is to cut down on high-mercury fish. Your practitioner will talk through your result and when it may be worth retesting.