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Egg White Protein (Serum) Concentration

Published: August 9, 2026Updated: August 17, 2026

This test measures the amount of protein derived from egg white in your blood serum. It may be used to assess liver function or detect certain liver diseases.

Quick summary

["Egg white protein levels can help identify liver health or conditions affecting protein metabolism."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
102733-3
Short code
Egg White IgG RAST
Synonyms
Egg White IgG RAST
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
10
Ref high
40
Critical range
— – 500 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
rast
CPT
84484
SNOMED
302774002
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 This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like fatigue, jaundice (yellowing of skin/eyes), or unexplained weight loss. It could also be part of a broader evaluation for liver disease, cirrhosis, or other conditions affecting protein synthesis or breakdown in the body.

What to Expect Before the Test

No special preparation is typically needed. You may be asked to fast for 8–12 hours before the test if it’s part of a liver function panel. Bring any medications or supplements you’re taking to your appointment.

How the Test Works

Blood is drawn from a vein in your arm. The sample is sent to a lab where protein concentration is measured using a specialized method (often electrophoresis or nephelometry). Results are compared to a reference range for your age and health status.

What the Results Mean

Elevated levels may suggest liver disease, malnutrition, or conditions that impair protein production. Low levels could indicate liver dysfunction, severe dehydration, or certain metabolic disorders. Always discuss results with your provider.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

No special preparation required. Avoid fatty meals before the test if possible.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

Egg White Protein

Frequently asked questions

Is there a normal range for this test?
Standard reference ranges vary by lab and individual factors like age, diet, and overall health. Your provider will interpret results in the context of your medical history and symptoms. Ask your lab for the specific range used for your test.
Can diet affect egg white protein levels?
Dietary protein intake (including egg whites) may influence protein metabolism, but egg white protein tests typically focus on blood serum levels rather than dietary intake. High protein diets or liver disease could indirectly impact results.
What conditions might cause abnormal results?
Abnormal results could be linked to liver diseases (e.g., cirrhosis, hepatitis), malnutrition, kidney disease, or conditions affecting protein synthesis (e.g., certain cancers or autoimmune disorders). Always consult your provider for personalized interpretation.
  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 17, 2026. · Read our editorial policy