Silver Birch Fluoroprotein (SBFP) Concentration (24-hour urine)
This test measures the presence of silver birch-derived proteins in your urine over 24 hours, which may help assess exposure to natural allergenic compounds.
["Helps evaluate potential allergic reactions to silver birch pollen or related proteins in urine samples."]
Key facts at a glance
- LOINC
- 112146-6
- Short code
- Silver Birch IgE Qn IA
- Synonyms
- Silver Birch IgE Qn IA
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- 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 This Test Measures
Silver birch fluoroprotein (SBFP) is a protein found in silver birch pollen and related plants. This test detects these proteins in your urine over a full day to determine if they’re present in your system, often used in allergy research or exposure studies.
Why It Might Be Ordered
Doctors may order this test if you’re suspected of having an allergy to silver birch pollen or if research involves studying natural allergen exposure through urine biomarkers. It’s not a standard diagnostic tool for allergies but may be part of specialized studies.
Sample Collection and Preparation
A 24-hour urine collection is required. You’ll typically collect all urine for a full day, starting and ending at the same time. The sample is processed in a lab to measure SBFP concentration.
What to Expect Before the Test
No special preparation is needed, but avoid certain medications or dietary supplements that might interfere with results. Follow your healthcare provider’s instructions carefully.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is primarily used in research settings to study allergen exposure and immune responses. Elevated levels in urine may indicate recent exposure to silver birch proteins, which could be relevant in allergy studies or environmental health research. It does not diagnose allergies or provide clinical treatment guidance.
Short name
24-Hour Urine SBFP Screen
Frequently asked questions
What does a positive or elevated result mean?
Yes, you can eat and drink normally, but avoid medications or supplements that might affect urine composition. Follow your provider’s specific instructions for the 24-hour urine collection.
How long will it take to get results?
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