Antibiotic Resistance Genotyping for Aminoglycosides (e.g., Gentamicin, Tobramycin, Amikacin)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you’ve been treated with aminoglycoside antibiotics and the infection hasn’t cleared up, or if you’re at risk of developing resistance. It’s also used in research or specialized settings to monitor antibiotic effectiveness in hard-to-treat infections.

What to Expect Before the Test

No special preparation is needed. The test may involve a blood sample (whole blood) or other body fluid, depending on the clinical context. If a urine sample is used, you may need to collect it at home or in a lab setting.

How the Test Works

The test analyzes genetic material (DNA) from bacteria to identify specific mutations linked to resistance in aminoglycosides. Advanced lab techniques, such as sequencing or PCR (polymerase chain reaction), detect these changes to assess potential treatment failure.

What the Results Mean

Results indicate whether the bacteria in your sample carry resistance genes for aminoglycosides. Positive findings suggest the bacteria may not respond to these antibiotics, guiding treatment decisions to avoid ineffective therapy.