Possibility of false-negative urine culture after antibiotics?

Thank you for reaching out with your question! It’s understandable to be concerned about your pet’s health and the accuracy of diagnostic tests. A false-negative urine culture can sometimes occur if your pet has recently been on antibiotics. Antibiotics can reduce or eliminate the bacteria in the urinary tract temporarily, which might prevent them from growing in the culture, leading to a negative result even if an infection is present.



If your pet is showing signs like frequent urination, straining, blood in the urine, or discomfort while urinating, an infection could still be possible. Keeping a close eye on these symptoms is important. While waiting for further consultation, ensure your pet has plenty of fresh water, as hydration can help flush out any lingering bacteria.



Monitor your pet for any changes in behavior, appetite, or energy levels. A worsening of symptoms, fever, or lethargy could be a sign of a more serious issue that might need urgent care.



If the symptoms persist or worsen, it’s a good idea to have a timely follow-up with a vet. Consider booking a video consult with one of our vets at Dial A Vet, where we can provide more personalized advice and determine if further testing or treatment is needed. We’re here to help ensure your pet gets back to feeling their best!