24-Hour Urine Lysozyme Concentration
This test measures the amount of lysozyme, a protein that helps fight bacteria, in your urine over a 24-hour period. It may be used to check for conditions affecting your immune system or kidney function.
["Lysozyme helps protect your body from infections; abnormal levels may signal immune or kidney issues."]
Key facts at a glance
- LOINC
- 75640-3
- Short code
- Lysozyme 24h Ur-sCnc
- Synonyms
- Lysozyme 24h Ur-sCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 20
- Ref high
- 400
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82670
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms like frequent infections, kidney problems, or if you’re being evaluated for conditions such as chronic granulomatous disease or certain immune disorders. It can also help monitor kidney function or response to treatment.
What Does the Test Involve?
You’ll collect all urine produced in a 24-hour period in a special container. The sample is then sent to a lab for analysis. This requires careful timing and proper storage of the urine collection.
What to Expect Before the Test
No special preparation is needed, but you should drink enough fluids to produce urine throughout the day. Avoid certain medications or supplements that might interfere with the test results, as directed by your provider.
What to Expect During the Test
You’ll collect urine in a container for 24 hours, typically starting after you urinate in the morning. Empty your bladder at the start and end of the collection period, discarding those samples. Keep the container refrigerated if possible to prevent bacterial growth.
Reference range
Premenopausal: 20-400 pg/mL; Postmenopausal: <30 pg/mLN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Urine Lysozyme (24-hour)
Frequently asked questions
What does a lysozyme test result mean?
How often is this test recommended?
Can lysozyme levels change with diet or medications?
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