Stenotrophomonas maltophilia DNA, Whole Blood — Qualitative Nucleic Acid Amplification Probe
A blood test that detects genetic material from Stenotrophomonas maltophilia, a bacterium that can cause bloodstream infection, especially in hospitalized or immunocompromised patients.
["A positive result means genetic material from S. maltophilia was detected in the blood."]
Key facts at a glance
- LOINC
- 105775-1
- Short code
- S maltophilia DNA Ct Bld +Qn NAA+prb
- Synonyms
- S maltophilia DNA Ct Bld +Qn NAA+prb
- Category
- liver
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- 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
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
What is this test?
This test examines a blood sample for genetic material from the bacterium Stenotrophomonas maltophilia. It is a qualitative test, so the result is reported as detected or not detected.
Why might I need this test?
The test may be ordered when a patient has signs of bloodstream infection, such as fever, low blood pressure, chills, or worsening illness. It is especially relevant for people with weakened immune systems or those who are hospitalized.
How is the test performed?
A laboratory professional uses a nucleic acid amplification method with probe detection to look for the bacterium's genetic material in the blood. The result is interpreted along with symptoms, other laboratory findings, and possible antibiotic treatment.
How do I prepare for the test?
This test usually requires only a routine blood draw and generally needs no special preparation. Follow your healthcare professional's instructions, particularly if antibiotics have recently been started.
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.
A detected result indicates that genetic material from S. maltophilia was present in the blood and may support a diagnosis of bloodstream infection. A positive result can help guide antibiotic treatment because this organism has developed resistance to several commonly used antibiotics. A result that is not detected lowers the likelihood of infection with this organism but does not completely exclude it, especially if testing occurred after antibiotics or early in the illness.
Short name
S. maltophilia Blood DNA Test
Frequently asked questions
Does a positive result mean I have a bloodstream infection?
Can this test detect an infection before symptoms appear?
Is S. maltophilia the same as a common respiratory bacterium?
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