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Liver Function Test Panel (Bromocresol Green and Bromocresol Purple Screening/Confirmation)

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

This test measures certain liver enzymes and proteins to assess liver health and function. It helps detect conditions like liver damage, inflammation, or disease.

Quick summary

["A simple blood test to check how well your liver is working."]

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

Key facts at a glance

LOINC
24324-6
Short code
Hep Func 1996 Pnl SerPl
Synonyms
Hep Func 1996 Pnl SerPl
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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

This test includes two key components: Bromocresol Green (BCG) and Bromocresol Purple (BCP) assays. These tests evaluate the liver’s ability to process and detoxify substances, indirectly reflecting protein synthesis and metabolic function. While not a single enzyme, they collectively provide insight into liver function by measuring the concentration of certain substances in your blood.

Why It Matters

Liver function is critical for breaking down toxins, producing bile, and synthesizing proteins. Abnormal results may signal conditions like hepatitis, cirrhosis, or other liver diseases. Early detection can guide treatment and prevent complications.

Common Conditions Detected

This test is often used to screen for liver-related issues, such as chronic hepatitis, fatty liver disease, or bile duct obstructions. It may also help monitor liver function in patients with known liver conditions or those on medications that affect the liver.

Sample Collection and Preparation

A small blood sample is drawn from your arm. The test uses serum or plasma to analyze the specific substances measured by BCG and BCP. No special preparation is needed, but fasting may be advised depending on the clinical context.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Liver Function Panel (BCG/BCP)

Frequently asked questions

How long will I need to wait for results?
Results are typically available within 24 to 48 hours, depending on lab processing times. Your healthcare provider will discuss the findings with you during your follow-up visit.
What do abnormal results mean?
Abnormal results may indicate liver stress, inflammation, or dysfunction. Your doctor will interpret the results in relation to your medical history and symptoms to determine the next steps, which could include further testing or treatment adjustments.
Can I eat or drink before this test?
No specific dietary restrictions apply to this test, but if your doctor has ordered additional liver function tests (e.g., ALT, AST), they may recommend fasting. Always follow your provider’s instructions for the full panel.
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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