Gastrointestinal Tract Specific Protein Profile (Qualitative Screening)
This test measures specific proteins found in stool samples to help identify potential issues in the gastrointestinal tract, such as inflammation, infection, or bleeding.
["A qualitative stool protein test can help detect abnormalities in your digestive system that may require further medical evaluation."]
Key facts at a glance
- LOINC
- 42910-0
- Short code
- Hgb sp2 Gast gastro Ql
- Synonyms
- Hgb sp2 Gast gastro Ql
- Category
- hematology
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- 7 N/A – 20 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 84484
- SNOMED
- 302774002
- 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
This test detects the presence of certain proteins in stool that may originate from the gastrointestinal lining, blood, or other sources. Proteins like hemoglobin fragments, mucin, or other biomarkers are analyzed to assess for conditions such as gastrointestinal bleeding, inflammation, or infection.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms like unexplained weight loss, persistent diarrhea, black or tarry stools, abdominal pain, or if you have a history of gastrointestinal issues. It can also be used as part of a broader evaluation for conditions like ulcerative colitis, Crohn’s disease, or gastrointestinal bleeding.
Sample Collection and Preparation
A stool sample is collected, typically through a simple at-home collection kit provided by your healthcare provider. The sample is then sent to the lab for analysis. No special preparation is usually needed, but you may be advised to avoid certain foods or medications for a few days before testing.
What to Expect During Testing
The test is non-invasive and does not require a blood draw or other invasive procedures. Results are generally processed within a few days, and your healthcare provider will discuss them with you during your follow-up visit.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Positive results for specific proteins in stool may indicate conditions such as gastrointestinal bleeding, inflammatory bowel disease, or infections. Negative results do not definitively rule out these conditions, so further diagnostic testing may still be needed. Your doctor will interpret results in the context of your symptoms and medical history.
Short name
Gastrointestinal Protein Screen (Qualitative)
Frequently asked questions
What does a positive result mean?
How soon will I get my results?
Can I eat or drink normally before this test?
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