Naturally Occurring Plasma Factor E Cluster Detection (CDC Cluster Index)
This test measures a specific cluster of proteins in your plasma that may be linked to immune system activity or certain genetic conditions.
["Understanding your cluster profile can help identify potential health risks or conditions requiring further evaluation."]
Key facts at a glance
- LOINC
- 69581-7
- Short code
- Nat PFGE cluster/CDC cluster Islt
- Synonyms
- Nat PFGE cluster/CDC cluster Islt
- 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
What This Test Measures
The test detects a group of proteins (Factor E cluster) that may be associated with immune function or inherited disorders. This cluster is analyzed using a specialized method to identify patterns that could indicate underlying health factors.
Why It Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms or risk factors related to immune dysfunction, genetic testing considerations, or if you’re part of a research study investigating protein clusters.
Sample Collection and Preparation
A blood sample is drawn from a vein in your arm. Plasma is separated from the blood cells and prepared for analysis. This process ensures accurate measurement of the protein cluster without interference from other blood components.
Test Method and Process
The test uses a sophisticated technique to detect and quantify the Factor E cluster proteins. Results are expressed as a qualitative index (qualitative probe) rather than a numeric value, helping identify patterns rather than precise concentrations.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
While the Factor E cluster may not directly correlate with a specific disease, it can help identify individuals with genetic predispositions or immune-related conditions that may require monitoring or specialized care. Further evaluation by a healthcare provider is recommended for interpretation.
Short name
CDC Cluster Factor E Test
Frequently asked questions
What does a positive or abnormal result mean?
How often should I get this test?
Can lifestyle changes 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