Serum or plasma concentration of a substance measured by immunoassay (e.g., a marker related to protein or peptide levels)
This test measures the amount of a specific protein or peptide in your blood, often used to assess conditions affecting protein metabolism, inflammation, or other physiological processes.
["Helps diagnose or monitor conditions linked to abnormal protein levels in your bloodstream."]
Key facts at a glance
- LOINC
- 112009-6
- Short code
- Schema diagram Imp Endscpy
- Synonyms
- Schema diagram Imp Endscpy
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- endoscopy
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or risk factors for conditions like kidney disease, liver dysfunction, autoimmune disorders, or certain cancers. It could also be part of routine screening or monitoring for chronic illnesses.
What to Expect Before the Test
No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the draw if the test involves fasting-related measurements. Avoid strenuous activity or certain medications for 24 hours prior if instructed.
During the Test Process
A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but the process is quick and typically painless. The blood sample will be sent to a lab for analysis using an immunoassay method to detect and quantify the protein/peptide.
What the Results Mean
Results are compared to a reference range specific to the protein/peptide being tested. Elevated or low levels may signal underlying health issues, but interpretation depends on your clinical context, symptoms, and other test results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal levels of this marker can indicate conditions such as protein-losing syndromes, inflammatory diseases, or metabolic disorders. For example, elevated levels might suggest kidney problems, while low levels could point to malnutrition or liver disease. Always discuss results with your provider for personalized insights.
Short name
Protein/peptide marker (serum/plasma immunoassay)
Frequently asked questions
What does an abnormal result mean?
How often will I need this test?
Can lifestyle changes affect 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