uti test strip color chart

A color chart lets you match each reagent pad on the strip—typically the nitrite and leukocyte pads—to reference colors to determine results. Use the chart to identify which pad is which and compare their colors; a darker or pinker shade on the nitrite or leukocyte pad is commonly interpreted as a possible sign of infection or inflammation according to the chart.

Most UTI test strips give readable results in about 2 minutes. The nitrite pad can sometimes show a change in roughly 1 minute, while the leukocyte pad typically takes about 2 minutes. Check the specific timing printed in your kit’s instructions for exact read times.

UTI strips typically detect leukocytes (white blood cells) and nitrite in urine—two common markers used to screen for a urinary tract infection.

Compared with the chart, a pinker (or darker) color on the leukocyte or nitrite pad generally indicates a positive or abnormal reaction—commonly interpreted as possible infection or inflammation. Always compare the exact shade to the included color chart for the correct interpretation.

Most packages include the testing strips and printed instructions. Some kits also provide individually sealed strips or pouches for freshness; a few brands bundle accessories such as a handle/applicator or a swab and components for an additional vaginal pH test.

Results appear as colored reagent pads or indicator lines on the strip—commonly two separate pads (top and bottom) for nitrite and leukocyte. You match each pad’s color to the chart to read the result.

They change at different speeds: the nitrite pad can show a color change in about 1 minute, while the leukocyte pad typically takes about 2 minutes. Read each pad at the timing specified by your test.

Many strips are sold sealed in individual pouches or kept in moisture‑resistant containers to protect the reagent pads and reduce contamination between uses.

Some home kits bundle UTI strips with additional tests such as a vaginal pH test and may include a sterile swab or other sampling accessories for those extra tests.