Serum or Plasma Substance Concentration by Immunoassay (Bromocresol Green)
This test measures a specific substance in your blood using a bromocresol green-based immunoassay method. It helps detect or monitor certain proteins, enzymes, or other biomarkers.
["This test may assist in diagnosing or managing conditions affecting protein levels or specific metabolic pathways."]
Key facts at a glance
- LOINC
- 7497-1
- Short code
- CHEESEMLDHR
- Synonyms
- Cheese Mold BasoBnd Ab Qn
- Category
- chemistry
- Sample
- whole-blood
- Container
- EDTA (purple-top) or heparin (green-top) blood collection tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Basophil histamine release assay (flow cytometry or fluorometric method)
- CPT
- 86003
- SNOMED
- 428201007
- Specimen volume
- 5-10 mL of whole blood
- Stability
- Specimen should be processed within 24 hours of collection when stored at room temperature (18-25°C). If testing is delayed, refrigerate at 2-8°C for up to 48 hours. Do not freeze whole blood specimens.
- Hemolysis max
- 100
- Lipemia max
- 100
- Icterus max
- 50
- TAT
- 48–168 hours
- Order
- routine
What This Test Measures
The test detects the concentration of a particular substance in your serum or plasma using a chemical reaction with bromocresol green. This method identifies the presence and amount of the target analyte through its interaction with antibodies or other binding proteins.
Why It’s Ordered
Your healthcare provider may order this test to evaluate conditions like liver disease, kidney function, infections, or certain genetic disorders. It can also help track treatment progress for conditions where specific biomarkers are relevant.
Sample Collection and Preparation
A blood sample is drawn from a vein, typically in the arm. The blood is processed to separate serum (if clotted) or plasma (if anticoagulated) for testing. This sample is then analyzed in a lab using the bromocresol green immunoassay technique.
Possible Results and Interpretation
Results are expressed as a concentration value, though exact reference ranges vary by analyte and lab. Your provider will interpret results in relation to your clinical context, such as symptoms, medical history, or other test results.
Reference range
Reference values vary by laboratory; results reported as histamine release in units per volume of blood. Negative or low response typically indicates no significant sensitivity. Interpretation should be performed by a qualified allergist in conjunction with clinical history.N/A
No special patient preparation is typically required. Patients should continue their usual medications unless specifically instructed otherwise by their physician. Recent antihistamine use may affect basophil reactivity and should be documented. Patients should inform their healthcare provider of any recent allergic reactions or current allergy symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal results may indicate underlying health issues, such as abnormal protein synthesis, enzyme deficiencies, or systemic inflammatory processes. For example, elevated levels might suggest liver dysfunction, while low levels could point to genetic disorders or metabolic imbalances. Always discuss results with your healthcare provider for personalized insights.
Short name
BCG Immunoassay (Substance Concentration)
Frequently asked questions
What does this test measure?
How long will I need to prepare for this test?
Can I take this test at home?
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 14, 2026. · Read our editorial policy