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Serum or plasma mass concentration of a specific protein marker (e.g., related to acute-phase response)

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

This test measures the amount of a protein in your blood that may change in response to inflammation, infection, or other health conditions. Proteins like this often rise or fall when your body is reacting to illness or injury.

Quick summary

["This test helps doctors assess inflammation or systemic responses in your body."]

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

Key facts at a glance

LOINC
2962-9
Short code
GH Amn-mCnc
Synonyms
GH Amn-mCnc
Category
chemistry
Sample
fluid
Container
Sterile tube
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 they suspect an inflammatory condition, infection, or other health issue that affects protein levels in your blood. It could also be part of routine monitoring for certain chronic diseases.

What to Expect Before the Test

You may need to fast for a few hours before the test, depending on your specific instructions. Bring any medications you’re currently taking, as some may affect results. Avoid smoking or consuming alcohol for a specified period before the draw.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a small pinch, but it usually doesn’t cause significant discomfort. The blood sample is then sent to a lab for analysis.

What the Results Mean

Results can vary widely depending on the specific protein being measured. Elevated levels might indicate inflammation, infection, or other health concerns, while lower levels could suggest conditions like malnutrition or certain liver or kidney issues. Your doctor will interpret these results in the context of your overall health and medical history.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Acute-phase protein mass concentration

Frequently asked questions

What causes protein levels to change?
Protein levels can change due to infections (like bacterial or viral illnesses), injuries, autoimmune diseases, or certain medications. Chronic conditions such as heart disease, kidney disease, or liver disease may also affect these markers. Stress, pregnancy, and certain foods can also influence protein concentrations.
How often should I get this test?
Your doctor will determine how often you need this test based on your medical condition, symptoms, and treatment plan. Some patients may need it monthly, while others may only need it once or twice a year.
Can I eat or drink anything before the test?
Follow your doctor’s instructions carefully. Typically, you may need to fast for a few hours before the test, but some tests allow for water. Always check with your healthcare provider or lab technician for specific guidelines.
  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