Serum Lysozyme Concentration (Mass Concentration)
This test measures the amount of lysozyme, a protein found in certain immune cells, in your blood serum. Lysozyme helps protect against bacterial infections.
["Lysozyme helps fight bacteria and may be checked if you have immune-related conditions or infections."]
Key facts at a glance
- LOINC
- 10503-1
- Short code
- Lysozyme Ag Tiss Ql ImStn
- Synonyms
- Lysozyme Ag Tiss Ql ImStn
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- immune-stain
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What Lysozyme Does in Your Body
Lysozyme is an enzyme produced primarily by white blood cells and certain other tissues. It plays a role in breaking down bacterial cell walls, helping your body defend against bacterial infections. While lysozyme is not as commonly measured as other proteins, elevated levels may suggest certain immune responses or conditions.
Why It Might Be Ordered
Your healthcare provider may order this test if you have symptoms or conditions linked to immune system involvement, such as chronic infections, certain inflammatory diseases, or if you’re being evaluated for conditions like granulomatous diseases or certain types of arthritis.
Possible Causes of Abnormal Results
Elevated lysozyme levels could be associated with active infections, certain inflammatory processes, or conditions affecting white blood cells. Lower-than-expected levels might be less common and could warrant further investigation into underlying immune function.
What to Expect Before the Test
No special preparation is typically needed. You may fast if instructed by your provider, but this test does not require fasting. Bring any medications or supplements you’re taking to discuss with your healthcare team.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance of Lysozyme Levels
Short name
Serum Lysozyme
Frequently asked questions
What does my lysozyme test result mean?
Can lysozyme levels change with diet or exercise?
Is lysozyme tested often in routine check-ups?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy