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Serum or plasma concentration of total protein (qualitative or semi-quantitative screening)

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

This test measures the total amount of protein in your blood. Proteins help your body stay healthy by transporting nutrients, fighting infections, and maintaining fluid balance.

Quick summary

["A screening test for protein levels in your blood can help detect conditions like dehydration, liver disease, or kidney problems."]

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

Key facts at a glance

LOINC
112032-8
Short code
Dx Endscpy
Synonyms
Dx Endscpy
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
endoscopy
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 order this test if you have symptoms like swelling, unexplained weight changes, fatigue, or if they suspect an underlying condition affecting your liver, kidneys, or overall protein balance. It can also be part of routine check-ups or monitoring for chronic illnesses.

What to Expect Before the Test

You may be asked to fast for a few hours before the test, but this is not always required. Bring any medications you’re currently taking, as some can affect results. Avoid heavy meals or excessive alcohol before the draw.

How the Test Works

A small sample of blood is drawn from a vein, usually in your arm. The sample is sent to a lab where it is analyzed to determine the total protein content. The method may involve a qualitative or semi-quantitative approach, such as turbidimetry or nephelometry, to estimate protein levels.

What the Results Mean

Results are not always given as a specific number but may be reported as a qualitative screening (e.g., normal, low, high). If your results are outside expected ranges, follow-up testing or additional evaluation may be needed to identify the cause.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Total Protein Screening

Frequently asked questions

How long does it take to get my results?
Results are typically available within 1 to 3 business days, depending on your lab’s processing time. If you have urgent concerns, contact your provider for updates.
Can I eat or drink before this test?
Most labs do not require fasting for this screening test, but follow your provider’s instructions. Avoid heavy meals or excessive alcohol before the draw if advised.
Will this test affect my medications?
Some medications, like steroids or certain diuretics, may influence protein levels. Always inform your healthcare provider about all medications you’re taking before the test.
  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