What is the most common test requested from a catheterized specimen?

The most common test requested from a catheterized specimen is a bacterial culture. When urine is collected through catheterization, it is often to diagnose urinary tract infections (UTIs). A bacterial culture tests for the presence of bacteria in the urine, helping to identify any infections that may be present. This test is particularly important in catheterized specimens because these samples are typically less contaminated than those obtained through other means.

In addition, catheterized specimens allow for better collection in patients who can’t void urine by themselves, making it an ideal method for accurate diagnosis. Recognizing the organisms present through culture also aids healthcare professionals in determining the most effective antibiotic treatment, leading to better patient outcomes.

Other tests, such as blood urea nitrogen, creatinine clearance, and electrolyte levels, are important in assessing kidney function or systemic health but are not specific to evaluating urinary tract conditions as bacterial cultures are. Thus, amongst the options provided, the bacterial culture stands out as the most relevant and commonly requested analysis from catheterized urine specimens.