Screening Test for Multiple Biomarkers in Serum (Bromocresol Purple/Bromocresol Green Electrophoresis)
This screening test measures several substances in your blood using a specialized electrophoresis method with bromocresol dyes. It helps identify potential metabolic, protein, or electrolyte imbalances that may require further evaluation.
["This test may detect early signs of conditions affecting protein, acid-base balance, or electrolyte levels in your blood."]
Key facts at a glance
- LOINC
- 46355-4
- Short code
- FFDM Brst-L screening
- Synonyms
- FFDM Brst-L screening
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- mg-ffd
- 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 test uses electrophoresis to separate and analyze proteins and other substances in your serum. Bromocresol purple and green dyes help identify specific components, including: - Protein fractions (e.g., albumin, globulins) - Electrolytes or related metabolites - Potential markers of metabolic disorders or kidney function. The results are interpreted as part of a broader clinical assessment.
Why It’s Done
This screening test is often performed as part of routine health checks, monitoring for conditions like: - Electrolyte imbalances (e.g., related to kidney disease) - Protein disorders (e.g., hypoalbuminemia) - Metabolic or systemic disorders that affect blood chemistry. It may also be used in research or specialized clinical settings to assess broad biochemical profiles.
How the Test Works
Blood is drawn and processed into serum. The serum is then subjected to electrophoresis, a technique that separates molecules based on size and charge. Bromocresol dyes bind to specific proteins or metabolites, allowing for visual or quantitative detection of abnormal patterns.
What to Expect Before the Test
No special preparation is typically required, but you may be asked to fast for 8–12 hours if the test includes fasting components. Wear comfortable clothing and plan to stay for about 15 minutes after the blood draw.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
This test may reveal subtle imbalances that could indicate underlying conditions like chronic kidney disease, liver dysfunction, or metabolic syndromes. Early detection can prompt timely medical intervention.
How long will I need to wait for results?
Can I eat or drink anything before this test?
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 16, 2026. · Read our editorial policy