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Serum/plasma concentration of protein using bromocresol purple dye binding method

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

This test measures the total protein level in your blood, which includes both albumin and globulin proteins. It helps assess overall protein status and can indicate conditions like malnutrition, kidney disease, or liver problems.

Quick summary

["Total protein levels reflect your body’s protein balance and can signal underlying health concerns."]

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

Key facts at a glance

LOINC
20459-4
Short code
Gp B Strep Ag Spec Ql LA
Synonyms
Gp B Strep Ag Spec Ql LA
Category
coagulation
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
la
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

Why Is This Test Done?

Your healthcare provider may order this test to check for conditions affecting protein levels, such as kidney disease, liver disease, malnutrition, or certain immune disorders. It can also be used to monitor treatment progress for conditions like protein-losing enteropathy or nephrotic syndrome.

What Does a Result Mean?

Higher-than-normal results might suggest conditions like dehydration, multiple myeloma, or severe liver disease. Lower-than-normal results could indicate malnutrition, kidney disease, or conditions that cause excessive protein loss (e.g., severe diarrhea or protein-losing enteropathy). Results are interpreted based on your overall health and symptoms.

Common Conditions Monitored

This test is often used to monitor kidney function, liver health, and protein balance in patients with chronic illnesses. It may also help diagnose or track conditions like inflammatory diseases, infections, or metabolic disorders.

Sample Collection and Preparation

A blood sample is drawn from a vein, usually in your arm. The blood is then processed to separate serum or plasma for testing. This test does not require fasting unless specified by your provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

BCP Protein

Frequently asked questions

What might cause abnormal results?
Abnormal protein levels can result from conditions like kidney disease (e.g., glomerulonephritis), liver disease (e.g., cirrhosis), severe infections, malnutrition, or certain cancers (e.g., multiple myeloma). Chronic conditions like heart failure or inflammatory diseases may also affect protein levels. Always discuss your results with your healthcare provider.
How often should I get this test?
The frequency depends on your health condition and treatment plan. Some patients need this test regularly (e.g., monthly or quarterly) if they have chronic kidney or liver disease, while others may only need it once or twice a year. Follow your provider’s recommendations.
Can diet affect this test result?
Yes, diet can influence protein levels. High-protein diets or certain medical diets (e.g., low-sodium) may temporarily alter results. Avoid extreme dietary changes before testing unless instructed by your provider to ensure accurate 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