Skip to content

RNA Sequencing of Serum/Plasma for Specific Gene Expression Profiling (Using a Probe-Based Assay)

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

This test analyzes RNA in your blood to detect specific genetic sequences, often used to identify patterns of gene expression that may relate to health conditions like infections, cancers, or genetic disorders.

Quick summary

["Helps diagnose or monitor conditions by measuring unique RNA markers in your blood."]

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

Key facts at a glance

LOINC
88203-5
Short code
DENV 1+2+3+4 RNA SerBld NAA+probe
Synonyms
DENV 1+2+3+4 RNA SerBld 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 Is RNA Sequencing Used For?

RNA sequencing can help doctors understand how certain genes are active in your body. This can be useful in diagnosing diseases like infections (e.g., viruses), cancers (e.g., checking for tumor-related genes), or genetic conditions where RNA patterns differ from normal.

How Is This Test Performed?

A blood sample is taken, and RNA is extracted from the serum or plasma. Special probes detect specific RNA sequences, and the results are analyzed to identify patterns or abnormalities in gene expression.

What Does the Test Result Mean?

Results show which RNA sequences were detected and their relative levels. These findings may indicate whether you have an infection, cancer, or another condition affecting gene activity. Your healthcare provider will interpret these results in the context of your symptoms and medical history.

Common Uses in Healthcare

This test is often used in research or specialized clinical settings to study gene expression changes. It may also be part of advanced diagnostic testing for conditions where traditional blood tests are inconclusive.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

RNA Probe Test

Frequently asked questions

Why might my doctor order this test?
Your doctor may recommend this test if they suspect a condition involving abnormal gene expression, such as certain cancers, infections, or genetic disorders. It may also be used in research or advanced diagnostic scenarios where standard tests are insufficient.
How long does it take to get results?
Results can take several days to a couple of weeks, depending on the lab’s processing time and complexity of the analysis. Your doctor will contact you once results are ready.
Is this test painful or invasive?
No, this test involves a simple blood draw, similar to other routine blood tests. The process is quick and usually requires minimal discomfort.
  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