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Serum/Plasma Substance Concentration (Bromocresol Green Dye Binding)

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

This test measures how bromocresol green (BCG) binds to a protein in your blood, often used to assess liver function or protein synthesis.

Quick summary

["This test helps evaluate liver health and protein balance in your bloodstream."]

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

Key facts at a glance

LOINC
111907-2
Short code
AE UGI Endscpy
Synonyms
AE UGI Endscpy
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
endoscopy
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 BCG dye binding test works by adding a specific dye (bromocresol green) to your serum or plasma. The dye binds to certain proteins, and the amount of dye that binds is measured. This binding reflects the concentration of specific proteins, often related to liver function or albumin levels.

Why It’s Ordered

Your healthcare provider may order this test if they suspect liver disease, malnutrition, or conditions affecting protein production. It can also help monitor treatments for conditions like cirrhosis or kidney disease.

Sample Preparation

A blood sample is drawn from a vein, typically in the arm. The blood is processed to separate serum or plasma, which is then tested for dye binding.

Common Conditions Monitored

This test is often used to monitor liver function, detect protein deficiencies, or assess the effectiveness of treatments for conditions like chronic liver disease or severe malnutrition.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Dye Binding Test

Frequently asked questions

What does a low or high result mean?
A low result may suggest liver disease, malnutrition, or conditions affecting protein levels, while a high result could indicate less common issues like certain genetic disorders or overproduction of binding proteins. Results are interpreted in the context of your overall health and symptoms.
How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on your lab’s processing schedule.
Is this test painful?
The blood draw itself may cause mild discomfort, but the test itself is non-invasive and painless after the sample is collected.
  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