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Serum or Plasma Substance Concentration by Immunoassay (Bromocresol Green)

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

This test measures a specific protein or substance in your blood using a bromocresol green-based immunoassay method. It helps assess certain metabolic or functional conditions.

Quick summary

["This test detects a particular substance in your blood that may indicate underlying health concerns."]

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

Key facts at a glance

LOINC
60966-9
Short code
ST Amp dL-V5
Synonyms
ST Amp dL-V5
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ekg
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 method detects the concentration of a substance in your blood, often used to evaluate conditions related to protein metabolism, liver function, or other physiological processes. The exact analyte is not specified here, but it is typically a protein or small molecule measured in serum or plasma.

Why It’s Ordered

Your healthcare provider may order this test to monitor conditions like protein disorders, liver function, or to screen for metabolic abnormalities. It can also be part of routine or specialized testing depending on your symptoms or medical history.

Common Uses

This test may be used to diagnose or monitor conditions such as protein-related diseases, certain metabolic disorders, or to assess the effectiveness of treatments targeting these substances.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The blood is processed to separate serum (liquid part after clotting) or plasma (liquid part after anticoagulant use) for testing. Avoid eating or drinking for a specified period before the test if instructed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCG Immunoassay (Serum/Plasma)

Frequently asked questions

What does an abnormal result mean?
An abnormal result may indicate an imbalance in the measured substance, which could suggest conditions like protein deficiencies, liver disease, or other metabolic issues. Your healthcare provider will interpret the results in the context of your overall health and symptoms.
How often should I get this test?
The frequency depends on your medical condition and treatment plan. Follow your healthcare provider’s instructions for scheduling follow-up tests.
Can I eat or drink before the test?
Check with your healthcare provider about dietary restrictions before the test. Typically, fasting may be required, but this can vary based on the test and your specific instructions.
  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