IgM blood test in Chiswick
An IgM blood test measures immunoglobulin M, the first antibody the body makes when it meets a new infection. It is booked to look at immune function and to add detail to other immune protein results.
What the test measures
Immunoglobulin M (IgM) is a large antibody made of five linked units. It is the first type of antibody produced when the immune system encounters a new germ, so it plays a key role early in an infection before longer-lasting IgG takes over. IgM stays mainly in the bloodstream because of its size.
This test measures your total IgM, not antibodies against a specific infection. Together with IgA and IgG, it gives a broad view of how your body is producing antibodies.
The price includes the blood sample taken at our Chiswick clinic, analysis at the Randox accredited laboratory, a practitioner review of your result with you, and a GP feedback report on request.
Who it is for
- You have frequent infections and want to check your overall antibody production.
- You are already checking IgA and IgG and want a complete picture.
- You have a liver or autoimmune condition and are reviewing immune proteins.
- Your GP has noted an unusual globulin or protein result.
Understanding your result
Your report shows your IgM with the laboratory reference range. A raised IgM can be seen during or soon after a new infection, with some liver conditions, autoimmune conditions and, less commonly, blood conditions in which one antibody type is overproduced. Mildly raised levels can also be a harmless finding in some people.
A low IgM can occur with some inherited immune conditions, medicines that suppress the immune system, or protein loss. The level is always read alongside IgA, IgG and your history. A value outside the range is a prompt for discussion with your practitioner and possibly your GP, not a diagnosis.
Preparing for your test
No fasting is needed. If you have had a recent infection, it can help to wait two to three weeks after recovering, unless your practitioner wants a reading during the illness. Tell us about any immune-modifying medicines you take, and keep taking prescribed medicines unless your doctor advises otherwise.
IgM is checked with IgA and IgG in Advanced GP3 and in Omnia Signature. You can also browse every blood test and price in Chiswick.
Questions
How much is an IgM test in Chiswick?
An immunoglobulin M (IgM) blood test at Omnia Lifestyle costs £49. This includes the sample at our Chiswick clinic, laboratory analysis, a practitioner review of your result and a GP feedback report on request.
What is the difference between IgM and IgG?
IgM is the first antibody made when you meet a new infection, while IgG is produced later and gives longer-term protection.
Does a high IgM mean I have an infection now?
It can, but not always. Raised IgM has several possible causes, and total IgM cannot identify a specific infection.
Should I test IgA, IgG and IgM together?
Often, yes. Looking at all three gives a more complete view of antibody production than any one alone.
