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Salmonella DNA Detection by Probe-Based Nucleic Acid Amplification (Serum/Plasma)

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

This test checks for genetic material from *Salmonella* bacteria in your blood or plasma, which may indicate an infection.

Quick summary

["Helps diagnose bloodstream infections caused by *Salmonella* bacteria."]

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

Key facts at a glance

LOINC
96313-2
Short code
Salmonella DNA Bld Pos Ql NAA+n-prb
Synonyms
Salmonella DNA Bld Pos Ql NAA+n-prb
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
non-probe-amp-tar
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Matters

Salmonella bacteria can cause severe infections, including bloodstream infections (sepsis), which require prompt treatment. This test detects their DNA to confirm infection early, even if symptoms aren’t yet obvious.

What to Expect Before the Test

No special preparation is needed. A blood sample will be drawn from a vein, similar to other blood tests. The sample is tested for *Salmonella* DNA using a sensitive probe-based method.

What the Results Mean

A positive result means *Salmonella* DNA was found, suggesting an active infection. A negative result means no detectable DNA was found at this time, but infection could still be present. Follow-up testing may be needed.

Common Causes and Risks

This test is used primarily in patients with suspected *Salmonella* bloodstream infections, often after exposure to contaminated food or water. It’s not routine for everyone.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Doctors order this test when patients show signs of a serious *Salmonella* infection, such as fever, chills, or abnormal blood test results. It helps guide treatment decisions, especially in high-risk groups like those with weakened immune systems or recent travel to areas with known outbreaks.

Short name

Salmonella DNA Test (Serum/Plasma)

Frequently asked questions

What does a positive result mean?
A positive result strongly suggests *Salmonella* bacteria are present in your blood or plasma, meaning you likely have an active infection. Your doctor will work with you to determine the best treatment, which may include antibiotics.
How soon can I expect results?
Results are typically available within 24 to 48 hours, depending on lab processing times. Your healthcare provider will contact you with the outcome.
Can I prevent *Salmonella* infections?
Yes! Wash your hands thoroughly after handling raw meat, vegetables, or contaminated surfaces. Avoid raw or undercooked foods, especially from high-risk sources. If you’ve traveled to areas with poor food safety, inform your doctor.
  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