What is the primary purpose of a urine dipstick?

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This test is a rapid, semi-quantitative screening tool that uses chemically treated pads on a strip to assess several urinary constituents. It provides quick indications of protein, glucose, ketones, pH, and urine concentration (specific gravity), helping to flag abnormalities that may reflect kidney issues, diabetes, metabolic problems, or hydration status. Because the dipstick gives an overall snapshot, abnormal results guide further testing (such as microscopic exam or culture) rather than serving as a definitive diagnosis. It is not used to culture pathogens from urine, which requires a urine culture with incubation; it does not measure urine volume over time, which requires collection and measurement; and ABO blood grouping is determined from blood typing, not urine.