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Bromocresol Green Protein Electrophoresis (Serum)

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

This test measures protein distribution in your serum using bromocresol green dye to separate and analyze different protein fractions, often used to evaluate albumin and globulin levels.

Quick summary

["This helps assess protein balance and potential conditions like liver disease or malnutrition."]

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

Key facts at a glance

LOINC
89876-7
Short code
MTB RIF and INH resist Pnl Islt/Spm
Synonyms
MTB RIF and INH resist Pnl Islt/Spm
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
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 dye binds to specific protein groups, allowing separation of albumin (the primary protein in blood) and globulins (proteins like immunoglobulins). This helps distinguish between normal and abnormal protein patterns.

Clinical Uses

Electrophoresis like this is typically used to diagnose conditions affecting protein synthesis, such as liver disease, kidney disease, or certain immune disorders. It may also be part of a broader evaluation for unexplained protein abnormalities.

How the Test Works

A small blood sample is drawn and placed on a gel. An electric current is applied, causing proteins to migrate based on their size and charge. The dye highlights different protein bands, which are then measured for concentration.

Preparation Tips

No special preparation is needed, but fasting is not required. Avoid excessive alcohol or certain medications that may affect protein levels before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test provides critical information about protein metabolism and distribution, which can help identify systemic conditions like hypoalbuminemia (low albumin), dysproteinemias (abnormal protein syndromes), or inflammatory states. It is sometimes used as part of a screening or confirmatory test for conditions affecting protein synthesis or transport.

Short name

BCG Protein Electrophoresis

Frequently asked questions

Why might my doctor order this test?
Your doctor may order this test if they suspect liver disease, kidney disease, malnutrition, or an immune-related condition that affects protein levels. It can also be used to monitor protein status in chronic illnesses.
What does a normal result mean?
A normal result indicates balanced protein levels with typical albumin and globulin distribution. However, reference ranges can vary by lab, so your doctor will interpret results in the context of your overall health.
How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
  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