Lp-PLA2 test: what it shows
- Updated
- 2026-09-10
- Every number with its source
What Lp-PLA2 is and what it shows
Lipoprotein-associated phospholipase A2 (Lp-PLA2) is an enzyme produced mainly by white blood cells (macrophages), and it circulates in the blood bound to LDL particles. Its activity is linked to inflammatory processes in the walls of blood vessels — Lp-PLA2 takes part in breaking down oxidised phospholipids in atherosclerotic plaques, which is why in some studies it is called a vessel-specific inflammation marker, in contrast to the more general inflammation marker CRP. Because of this link, Lp-PLA2 is sometimes tested as an additional marker when cardiovascular disease risk is being assessed, especially when the standard lipid markers (cholesterol, LDL, HDL) do not explain the whole risk picture. The marker is most often assessed together with other cardiac and inflammation markers rather than on its own. This marker lacks widely cited, publicly available international guidelines with specific normal limits, so interpretation always depends on the method used by the particular laboratory and on the interval given on the result sheet.
When the test is done
- When a doctor is assessing additional cardiovascular risk markers alongside the routine lipid panel
- When cardiovascular risk is intermediate according to the standard risk factors and additional information is wanted
- When there have been cases of early atherosclerosis or cardiovascular disease in the family
- When other inflammation and atherosclerosis markers are assessed at the same time — CRP, homocysteine, apolipoproteins
How to prepare
- The specific preparation requirements (whether or not you need to fast) depend on the laboratory — check when you go for the test
- Tell your doctor if you have an acute infection or any inflammation — this can affect the result
Reference range
Commonly accepted normal limits for Lp-PLA2 are not given in the publicly available international sources (MedlinePlus, WHO, NHS). You will find the exact interval used by the laboratory on your own result sheet — it depends on the particular test method. Any result that departs from the interval the laboratory gives is worth discussing with a doctor together with the other risk factors — family history, cholesterol values, blood pressure and lifestyle. One marker's value on its own does not give a diagnosis.
How Lp-PLA2 differs from CRP
CRP is a general inflammation marker that rises for many reasons — infection, injury, chronic illness. Lp-PLA2 is linked specifically to inflammation in the walls of blood vessels and to atherosclerotic plaques, which is why it is sometimes called a more vessel-specific marker; both, however, are most often assessed together rather than singly. Lp-PLA2 also does not replace a cholesterol test: it is an additional rather than a substitute marker, assessed together with total cholesterol, LDL, HDL and triglycerides, not instead of them. The decision on whether this test is needed is made by a doctor, based on the overall risk picture.
Related tests
Related markers on this site: cholesterol, LDL cholesterol, HDL cholesterol, CRP, high-sensitivity CRP and homocysteine. Which of them are needed in a particular case is decided by a doctor, based on the overall risk picture.
Full site in Lithuanian: proactiva.app
Frequently asked questions
›What is the Lp-PLA2 test?
Lp-PLA2 (lipoprotein-associated phospholipase A2) is an enzyme in the blood linked to inflammation in the walls of blood vessels and to the process of atherosclerosis. It is sometimes tested as an additional cardiovascular disease risk marker alongside the routine lipid panel.
›What is the normal range for Lp-PLA2?
Commonly accepted normal limits for Lp-PLA2 are not given in the publicly available international sources (MedlinePlus, WHO, NHS). You will find the exact interval used by the laboratory on your own result sheet — it depends on the particular test method.
›How does Lp-PLA2 differ from CRP?
CRP is a general inflammation marker that rises for many reasons — infection, injury, chronic illness. Lp-PLA2 is linked specifically to inflammation in the walls of blood vessels and to atherosclerotic plaques, which is why it is sometimes called a more vessel-specific marker, but both are most often assessed together rather than singly.
›Does the Lp-PLA2 test replace a cholesterol test?
No. Lp-PLA2 is an additional rather than a substitute marker — it is assessed together with total cholesterol, LDL, HDL and triglycerides, not instead of them. The decision on whether this test is needed is made by a doctor, based on the overall risk picture.
›When is it worth discussing an Lp-PLA2 result with a doctor?
Any result that departs from the interval given by the laboratory is worth discussing with a doctor together with the other risk factors — family history, cholesterol values, blood pressure and lifestyle. One marker's value on its own does not give a diagnosis.
›Can the Lp-PLA2 test be done in Lithuania?
Yes, some private laboratories in Lithuania offer the test. It is recommended to consult a doctor about whether the test is worthwhile and about interpreting the result, because international clinical guidelines on the use of this marker in everyday practice are not unambiguous.
Sources
- Medicina practica — 2026-09-19
Related markers
This site is not an emergency service. If severe chest or head pain, breathlessness, confusion, difficulty speaking, heavy bleeding or another acute problem has come on suddenly — do not wait for tests, call 112.
This information is not a diagnosis and does not replace a consultation with a doctor. Reference ranges depend on the laboratory, your age and sex — always compare your result with the range printed on your own report.