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Staphylococcus DNA Detection by Nucleic Acid Amplification Probe (Qualitative)

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

This test checks for genetic material from *Staphylococcus* bacteria in your sample, which may indicate an infection. It helps confirm whether bacteria are present even if other tests are unclear.

Quick summary

["This test helps diagnose suspected *Staphylococcus* infections by detecting its DNA, often used when cultures are slow or inconclusive."]

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

Key facts at a glance

LOINC
92778-0
Short code
Staphylococcus DNA Bld Pos Ql NAA+probe
Synonyms
Staphylococcus DNA Bld Pos Ql NAA+probe
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
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

What This Test Measures

The test identifies genetic material (DNA) from *Staphylococcus* bacteria, including common strains like *S. aureus* or *S. epidermidis*. It does not measure bacterial count or activity—just whether the bacteria’s DNA is present in your sample.

How the Sample Is Collected

Your sample could be blood, urine, wound swab, or other bodily fluid, depending on your clinical need. The test uses a specialized probe to detect DNA fragments from *Staphylococcus* bacteria.

When This Test Is Used

Doctors may order this test if you have symptoms like fever, redness, or infection signs (e.g., in wounds, urinary tract, or bloodstream) but cultures are negative or slow. It’s also used for monitoring chronic infections.

What to Expect Before the Test

No special preparation is needed unless instructed by your provider. If your sample is a blood draw, you may have a mild bruise or discomfort, but this is normal.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Staph DNA Probe Test

Frequently asked questions

Why might my doctor order this test?
Your doctor may recommend it if you have symptoms of infection (e.g., fever, pain, or drainage) but standard cultures haven’t confirmed the bacteria yet. It helps rule out *Staphylococcus* infections in unclear cases.
What does a positive result mean?
A positive result means *Staphylococcus* DNA was found in your sample, suggesting an infection. Your doctor will work with you to determine the best treatment, such as antibiotics.
Can false positives or negatives happen?
Yes, false positives or negatives can occur. For example, the test may miss *Staphylococcus* if it’s not actively growing or if other bacteria are present. Your doctor will interpret results in context with your symptoms and other tests.
  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