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Serum or plasma concentration of a specific protein marker measured by immunoassay (e.g., for renal or inflammatory assessment)

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

This test measures the amount of a particular protein in your blood, which may help doctors assess conditions like kidney function, inflammation, or other health concerns.

Quick summary

["Your blood protein levels can signal underlying health issues that need attention."]

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

Key facts at a glance

LOINC
33567-9
Short code
ENA SM+RNP IgG Ser IA-aCnc
Synonyms
ENA SM+RNP IgG Ser IA-aCnc
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
ia
CPT
82784
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 they suspect kidney disease, liver problems, an infection, or other conditions that affect protein balance in your body. It could also be part of routine monitoring for chronic conditions.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours before the blood draw if the test involves fasting-related measurements. Wear comfortable clothing and plan to rest after the draw.

How the Test Works

A small sample of your blood is taken and analyzed using an immunoassay method. This detects the protein’s presence and concentration in your serum or plasma.

What the Results Mean

Results help determine if your protein levels are within expected ranges or if they indicate potential health concerns. Abnormal levels may prompt further testing or follow-up.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Protein marker test

Frequently asked questions

What does a normal result mean?
A normal result means your protein levels are within the expected range for your age and health status. However, this test alone may not diagnose a specific condition—further evaluation might be needed.
Could this test detect kidney disease?
Yes, this test may help identify kidney-related protein abnormalities, but it often works alongside other tests (like urine protein tests) for a full assessment.
Do I need to avoid certain foods before this test?
No specific diet restrictions apply unless your provider notes fasting requirements for related measurements.
  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