Line Blot Analysis for Antibodies (Qualitative) – Serum
This test detects specific antibodies in your blood using a line blot method, often used to confirm or refine antibody presence related to autoimmune conditions or infections.
["Helps identify specific antibodies that may indicate an immune response or underlying health condition."]
Key facts at a glance
- LOINC
- 97176-2
- Short code
- YopD Ab Ser Ql Line blot
- Synonyms
- YopD Ab Ser Ql Line blot
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- line-blot
- 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
A line blot assay detects target antibodies bound to specific antigens on a membrane. This qualitative method visualizes bands where antibodies bind, helping confirm or differentiate antibody profiles beyond standard immunoassays.
How the Test Works
Your serum is applied to a membrane with immobilized antigens. If antibodies are present, they bind to specific lines, creating visible bands. This method is sensitive for detecting low-level antibodies that may not be detected by other tests.
Common Uses
This test is often used in research or specialized clinical settings to investigate complex antibody responses, such as in autoimmune diseases (e.g., lupus, rheumatoid arthritis) or infectious diseases (e.g., Lyme disease, chronic infections).
Why It Might Be Ordered
Your healthcare provider may recommend this test if standard antibody tests (e.g., ELISA) show inconclusive or ambiguous results, or if you have symptoms suggestive of an autoimmune or chronic infection.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
While not a routine diagnostic tool, line blot analysis provides detailed antibody profiling that can guide further testing or treatment decisions. It may help distinguish between different antibody types or confirm rare antibody-mediated conditions that standard tests miss.
Short name
Antibody Line Blot Test
Frequently asked questions
What does a positive result mean?
How long does it take to get results?
Can I prepare for 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