Serum Lysozyme Concentration

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms of an infection, such as persistent cough, fever, or unexplained swelling, or if you have conditions that affect immune function, like certain autoimmune diseases or chronic infections. It can also be part of diagnostic workup for conditions like tuberculosis or certain inflammatory diseases.

What Does a Lysozyme Test Involve?

A small blood sample is drawn from a vein, usually in your arm. The blood is then processed to separate serum, which is sent to the lab for lysozyme measurement. The test typically takes a few days to return results.

What Does the Test Result Mean?

Results are not typically interpreted alone but in the context of your overall health, symptoms, and other test results. Elevated levels may suggest an active bacterial infection or certain inflammatory conditions, while very low levels might indicate immune system issues or certain genetic disorders.

What Are Possible Causes of Abnormal Results?

Elevated lysozyme levels can be linked to bacterial infections, chronic inflammatory diseases, or certain cancers. Low levels may be associated with immune deficiencies, certain genetic disorders, or conditions affecting protein production.