Milk protein (casein) concentration in 24-hour urine
This test measures the amount of casein, a milk protein, excreted in your urine over a 24-hour period. It may help assess kidney function or protein loss in urine.
["This test helps evaluate kidney health by checking for protein loss in urine related to milk consumption."]
Key facts at a glance
- LOINC
- 19756-6
- Short code
- Sheep Milk IgE Qn
- Synonyms
- Sheep Milk IgE Qn
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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
Why This Test Is Done
Your healthcare provider may order this test if you have symptoms like swelling, frequent urination, or unexplained weight changes. It could also be used to monitor kidney function in people with certain conditions, such as kidney disease or proteinuria (protein in urine).
What to Expect Before the Test
You’ll need to collect all urine for 24 hours, typically starting and ending with your first morning urine. Follow your provider’s instructions carefully to ensure accurate results. Avoid certain medications or foods that might affect protein levels.
During the Test
The test involves collecting urine samples throughout the day and storing them in a container. The sample is then sent to a lab for analysis. No special preparation is needed beyond following the collection instructions.
What the Results Mean
Higher than expected levels of casein in urine may indicate kidney problems or excessive protein loss. Lower levels might suggest normal protein metabolism or dietary factors. Your provider will interpret results in relation to your overall health and symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated casein in urine can signal conditions like nephrotic syndrome, kidney damage, or certain inflammatory diseases. It may also help identify kidney issues in people with milk allergies or sensitivities. Always discuss results with your healthcare provider for personalized insights.
Short name
24-Hour Urine Casein
Frequently asked questions
What causes abnormal casein levels in urine?
How is this test different from a general urine protein test?
Can diet affect this test result?
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