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Total Antigenic Protein (or General Protein) Measurement by Immunoassay (Serum/Plasma)

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

This test measures the total amount of protein in your blood, which helps assess overall protein levels and kidney function.

Quick summary

["Protein levels can signal kidney health or other health conditions."]

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

Key facts at a glance

LOINC
49444-3
Short code
T gondii DNA # Amn NAA+probe
Synonyms
T gondii DNA # Amn NAA+probe
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
2-5 mL
Stability
Room temperature: 2h, Refrigerated: 24h
Hemolysis max
300
TAT
4–24 hours
Order
routine

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like swelling, frequent urination, or unexplained weight changes. It’s also used to monitor kidney function, detect kidney disease, or check for conditions like liver disease or malnutrition.

What to Expect Before the Test

No special preparation is needed, but you may be asked to fast for 8–12 hours before the test if it’s a fasting sample. Bring any medications you’re currently taking to your appointment.

How the Test Works

A small blood sample is drawn from a vein in your arm. The blood is then tested in a lab to measure protein levels using an immunoassay method, which detects and quantifies specific proteins.

What the Results Mean

Higher-than-normal protein levels may indicate conditions like dehydration, liver disease, or certain cancers. Lower-than-normal levels could signal kidney disease, malnutrition, or severe burns.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated protein levels in blood may signal conditions like multiple myeloma, severe liver disease, or dehydration. Low protein levels can reflect kidney dysfunction, malnutrition, or chronic illness. Monitoring these levels helps guide treatment decisions for chronic conditions.

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will discuss the results with you during your follow-up visit.
Can I eat or drink before this test?
If fasting is required (e.g., for a fasting protein test), avoid food and liquids except water for 8–12 hours before drawing blood. If no fasting is needed, you can eat and drink normally.
What does it feel like to have blood drawn?
You may feel a slight pinch or sting when the needle is inserted, but it usually lasts only a few seconds. Some people experience mild bruising or soreness afterward. If you’re nervous, let your provider know—they can offer distractions or numbing cream.
  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