The United Kingdom's NHS recently updated its urinary tract infection (UTI) webpage to explain that some people may experience persistent UTI symptoms, and current urine tests may not detect chronic infections caused by bacteria embedded in the bladder lining.
Chronic UTIs, also known as recurrent UTIs (rUTIs), are typically treated with antibiotics. The NHS advises patients to ask their GP to refer them to a specialist if they experience rUTIs.