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Serum or plasma concentration of a specific protein or substance measured by immunoassay (e.g., a marker probe)

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

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

Quick summary

["This test helps identify or track levels of specific biomarkers in your bloodstream."]

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

Key facts at a glance

LOINC
86502-2
Short code
VZV strain DNA Spec NAA+probe
Synonyms
VZV strain DNA Spec 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

What This Test Measures

This test detects the presence and concentration of a specific protein or substance in your serum or plasma. The method used is an immunoassay, which identifies the target analyte through antibody binding. The result helps healthcare providers assess conditions related to that particular marker.

Why It’s Done

Your doctor may order this test to diagnose, monitor, or manage conditions such as infections, autoimmune diseases, or metabolic disorders. It could also be part of a routine screening or diagnostic process depending on your symptoms or medical history.

Sample Collection

A blood sample is drawn from a vein, typically in your arm. The blood is then processed to separate serum or plasma for testing. You may experience a brief pinch or discomfort during the draw, but it usually lasts only a few seconds.

Test Preparation

No special preparation is usually needed for this test. However, you may be advised to avoid certain medications or foods for 24 hours before the test if instructed by your healthcare provider.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Elevated or low levels of this marker can indicate underlying health issues. For example, certain proteins may signal inflammation, infection, or genetic disorders. Your doctor will interpret the results in the context of your overall health and symptoms to guide diagnosis and treatment.

Short name

Protein/Substance Probe

Frequently asked questions

What does a high or low result mean?
A high or low result depends on the specific protein or substance being tested. Your doctor will explain what the results mean in relation to your health. Elevated levels might suggest conditions like infections, autoimmune diseases, or certain cancers, while low levels could indicate deficiencies or other health concerns.
How long will I need to wait for results?
Results can vary depending on the lab and your healthcare provider’s process. Typically, results are available within a few days to a couple of weeks. Your doctor will contact you once the results are ready.
Can I eat or drink before this test?
Generally, you can eat and drink normally before this test unless your doctor specifies otherwise. Follow any specific instructions they provide to ensure accurate results.
  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