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Serum or Plasma Substance Concentration by Immunoassay (Bromocresol Green)

Published: August 9, 2026Updated: August 16, 2026

This test measures a specific protein or substance in your blood using a bromocresol green-based immunoassay method. It helps assess certain metabolic, functional, or pathological conditions.

Quick summary

["This test detects levels of a substance in your blood that may indicate health concerns requiring further evaluation."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
37937-0
Short code
XR Ribs Ant Views
Synonyms
XR Ribs Ant Views
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
xr
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 bromocresol green immunoassay detects the concentration of a particular substance in your serum or plasma. This method relies on the interaction between the substance and bromocresol green dye to determine its presence and amount. The test is often used to quantify proteins or other biomarkers relevant to specific clinical scenarios.

Why It’s Ordered

Your healthcare provider may order this test to diagnose or monitor conditions such as liver function, protein synthesis, or metabolic disorders. It can also be used in research or specialized diagnostic settings where precise quantification of specific substances is needed.

Sample Collection and Preparation

Blood is collected via a vein in your arm and processed into serum (after clotting) or plasma (after anticoagulation). The sample is then sent to a laboratory for analysis using the bromocresol green immunoassay method.

Common Uses and Conditions

This test is typically used in specialized clinical contexts, such as assessing certain protein abnormalities, evaluating metabolic pathways, or confirming the presence of specific biomarkers in research or diagnostic screening.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated or decreased levels of the measured substance can signal underlying health issues, such as liver disease, protein disorders, or other metabolic imbalances. Results are interpreted in the context of your overall health, symptoms, and medical history by a healthcare professional.

Short name

BCG Immunoassay (Serum/Plasma)

Frequently asked questions

What does a high or low result mean?
A high or low result depends on the specific substance being tested. Your doctor will explain what the results mean in relation to your health. These results may require additional tests or follow-up care.
How long will I need to prepare for this test?
No special preparation is usually needed, but you may be asked to avoid certain medications or foods for a few days before the test. Follow your healthcare provider’s instructions.
Can I eat or drink before this test?
Typically, you can eat and drink normally unless instructed otherwise. Some tests may require fasting, but this test does not. Always check with your provider for specific guidelines.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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