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Serum or Plasma Substance Concentration by Immunoassay (Probe-Based) for a Specific Protein Marker

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

This test measures the amount of a specific protein in your blood, often used to detect or monitor certain conditions affecting protein levels.

Quick summary

["Helps identify or track conditions linked to abnormal protein levels in your bloodstream."]

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

Key facts at a glance

LOINC
86235-9
Short code
N men sg B synD Ct Spec Qn NAA+probe
Synonyms
N men sg B synD Ct Spec Qn NAA+probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
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 unexplained fatigue, weight changes, swelling, or if they suspect conditions such as kidney disease, liver issues, or certain cancers. It may also be part of routine monitoring for chronic illnesses.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for 8–12 hours before the test if it involves a blood draw. Avoid smoking or consuming certain medications for the specified period if instructed.

What Happens During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but the procedure is quick and typically painless. The blood sample is then sent to a lab for analysis.

What the Results Mean

Results are compared to a reference range that varies by protein type. High or low levels may signal underlying health issues, but interpretation depends on your medical history and symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Abnormal protein levels can indicate conditions like protein-losing syndromes, infections, autoimmune diseases, or metabolic disorders. This test is critical for diagnosing or managing these conditions early, guiding treatment decisions, and monitoring disease progression.

Short name

Protein Marker Test (Serum/Plasma)

Frequently asked questions

How long will I need to wait for my results?
Results are typically available within 1–3 business days, depending on lab processing times. Your healthcare provider will contact you once they are ready.
Can I eat or drink before this test?
Follow your provider’s instructions—some tests require fasting, while others do not. If fasting is needed, avoid food and liquids (except water) for 8–12 hours before the draw.
What if my results are outside the normal range?
If your results are abnormal, your provider will discuss them with you. They may recommend further testing, lifestyle changes, or additional treatments based on the cause of the deviation.
  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