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Serum or Plasma Substance Concentration (Bromocresol Green) for a Specific Protein or Peptide

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

This test measures the amount of a specific protein or peptide in your blood using the bromocresol green dye-binding method. It helps assess levels of substances like hormones, enzymes, or other biomarkers.

Quick summary

["This test may help diagnose or monitor conditions affecting protein levels in your blood."]

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

Key facts at a glance

LOINC
92946-3
Short code
S pyo DNA Spt NAA+non-prb-NCncRng
Synonyms
S pyo DNA Spt NAA+non-prb-NCncRng
Category
coagulation
Sample
sputum
Container
Sterile sputum container
Units
N/A
Ref low
0.8
Ref high
1.2
Critical range
— – 5 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-probe-amp-tar
CPT
85610
SNOMED
396252006
Specimen volume
3-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
TAT
4–24 hours
Order
routine

What This Test Measures

The bromocresol green method detects how much of your target protein or peptide binds to the dye. When the dye binds, it changes color, allowing the lab to quantify the concentration. This test can identify substances such as albumin, hormones, or enzymes, depending on the specific analyte being tested.

Why It Matters in Medicine

Measuring protein or peptide levels with this method can help doctors diagnose conditions like kidney disease (if albumin is measured), hormone imbalances, or detect early signs of inflammation or infection.

Common Uses and Conditions

This test may be used to screen for or monitor diseases such as liver function disorders, thyroid conditions, or other metabolic or inflammatory processes where specific proteins or peptides play a role.

Sample Collection and Preparation

A blood sample is drawn from a vein, typically in the arm. The sample is processed into either serum (after clotting) or plasma (anticoagulated blood). The test is performed on the serum or plasma portion.

Reference range

INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A

Specimen: sputum

Inform your healthcare provider if you are taking blood thinners. No special preparation required.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

BCG Protein/Peptide Assay

Frequently asked questions

What does an abnormal result mean?
An abnormal result may indicate an underlying health issue, such as an excess or deficiency of the measured protein or peptide. For example, low levels might suggest liver disease, kidney problems, or malnutrition, while high levels could signal conditions like inflammation, infection, or certain cancers. Your doctor will interpret results in the context of your symptoms and medical history.
How often will I need this test?
The frequency depends on your health condition and treatment plan. Your healthcare provider will determine how often you need retesting, whether it’s monthly, quarterly, or annually, or as needed for monitoring.
Can I prepare for this test?
No special preparation is usually required, but avoid heavy meals or excessive alcohol before the blood draw. If you’re on medications, let your doctor know to ensure they don’t interfere with the test results.
  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