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Serum or Plasma *Bromocresol Green Protein Binding Capacity* (BCG Protein Binding Capacity)

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

This test measures how well certain proteins in your blood bind with bromocresol green dye, which can help assess liver function and 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
53645-8
Short code
PV Stl Cult
Synonyms
PV Stl Cult
Category
chemistry
Sample
stool
Container
Clean container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
organism-specific-culture
Specimen volume
5 g
Stability
Refrigerated: 24h, Frozen: 7d
TAT
4–24 hours
Order
routine

What Does This Test Measure?

The bromocresol green protein binding capacity test evaluates how effectively your liver produces and maintains proteins that bind with this dye. It indirectly reflects liver function by measuring the amount of dye that binds to proteins in your serum or plasma. This can help identify issues with protein synthesis or liver disease.

Why Might Your Doctor Order This Test?

Your doctor may recommend this test if they suspect liver problems, such as cirrhosis, liver disease, or conditions affecting protein metabolism. It can also be used to monitor liver function in certain chronic illnesses or after treatments that impact liver health.

What to Expect Before the Test

No special preparation is usually needed for this test. You may have a blood sample drawn from a vein in your arm, similar to other routine blood tests. If you’re on certain medications or have specific health conditions, let your healthcare provider know before the test.

What Happens During the Test?

A healthcare professional will collect a small amount of blood from your arm using a needle. The blood sample is then processed to measure the protein binding capacity with bromocresol green dye. The results are typically analyzed within a few days.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Protein Binding Capacity

Frequently asked questions

What causes abnormal results in this test?
Abnormal results may be linked to liver diseases (e.g., cirrhosis, hepatitis), malnutrition, kidney disease, or conditions affecting protein production. Chronic illnesses or certain medications could also influence these findings.
How long does it take to get results?
Results are usually available within a few days to a week, depending on your lab’s processing schedule. Your healthcare provider will explain the results in detail during your follow-up visit.
Can lifestyle changes affect this test?
While diet and lifestyle factors like alcohol use can impact liver health, they may not directly alter protein binding capacity measurements. Always follow your doctor’s advice regarding test-related preparations.
  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