Stenotrophomonas maltophilia DNA in Specimen — Qualitative, Nucleic Acid Amplification with Probe Detection
A qualitative molecular test that detects Stenotrophomonas maltophilia DNA in a submitted specimen using nucleic acid amplification and probe detection.
["A positive result means the specimen contained detectable DNA from S. maltophilia, but clinical interpretation depends on the specimen and symptoms."]
Key facts at a glance
- LOINC
- 61403-2
- Short code
- S maltoph DNA Spec Ql NAA+probe
- Synonyms
- S maltoph DNA Spec Ql NAA+probe
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 7
- Ref high
- 56
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 84484
- SNOMED
- 302773008
- 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 this test?
This test looks for DNA from the bacterium Stenotrophomonas maltophilia, formerly called Xanthomonas maltophilia. It is a qualitative test, so it reports whether the organism's DNA was detected.
Why might I need this test?
Your clinician may order this test when there is concern for an S. maltophilia infection, such as pneumonia, bloodstream infection, or infection involving a wound or medical device. It may also be used to help assess suspected hospital-acquired infection.
How is the test performed?
The laboratory analyzes the submitted specimen with a nucleic acid amplification method that targets S. maltophilia DNA and uses a probe to confirm the result. The specimen type and collection method depend on the clinical situation and the laboratory's testing instructions.
How do I prepare for the test?
Follow the specific collection instructions provided by your healthcare team. Requirements can vary by specimen, and you may be asked to provide the sample before starting antibiotics, although treatment should not be delayed without medical guidance.
Reference range
Adult males: 7-56 U/L; Adult females: 7-43 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
S. maltophilia DNA Test
Frequently asked questions
Does a positive result always mean I have an infection?
Can this test detect S. maltophilia after antibiotics have been started?
What if the result is negative but I have symptoms?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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 17, 2026. · Read our editorial policy