Serum or Plasma Substance Concentration (Bromocresol Green Dye Binding) for a Specific Protein or Antigen
This test measures the amount of a particular protein or substance in your blood using a dye called bromocresol green. It helps assess conditions affecting protein levels or immune function.
["This test may help diagnose or monitor certain health conditions by tracking protein or antibody levels in your blood."]
Key facts at a glance
- LOINC
- 86143-5
- Short code
- S pneum Da 8 Ab Ser Ql
- Synonyms
- S pneum Da 8 Ab Ser Ql
- Category
- coagulation
- 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 uses bromocresol green, a dye that binds to specific proteins or antigens in your blood. When the dye binds, it changes color, allowing the lab to quantify the concentration of the target substance. This method is often used for detecting or monitoring proteins like immunoglobulins or other biomarkers.
How the Test Works
Your blood sample is processed to separate serum or plasma, where the target protein or antigen interacts with bromocresol green. The resulting color change is measured to determine the concentration of the substance.
Possible Uses in Healthcare
This test could be used to screen for or confirm conditions involving abnormal protein levels, such as immune disorders, infections, or certain types of cancers. It may also be part of a broader evaluation for monitoring treatment responses.
When You Might Need This Test
Your healthcare provider may recommend this test if you have symptoms like unexplained fatigue, recurrent infections, or if you’re being evaluated for conditions like autoimmune diseases, chronic infections, or other protein-related disorders.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Changes in the measured protein or antigen levels can indicate underlying health issues. For example, elevated levels might suggest an immune response or disease activity, while lower levels could point to deficiencies or treatment effects. Always discuss results with your doctor, as interpretation depends on your medical history and symptoms.
Short name
BCG Protein/Antigen Binding Test
Frequently asked questions
Why might I be asked to fast before this test?
How long will it take to get my test results?
Can I take any medications 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