A member asked:

What does it mean if a uti test strip turns + for wbc after 5 min?(recommended time to read results is at 2 min). test strip normal after 2 min.

4 doctors weighed in across 2 answers

Timing is everything: Uti dipstick tests are helpful but have serious limitations. Reading the stick at the correct time helps to improve the accuracy of the test, as you have noted. The chemicals causing the color change degrade in time, confusing things. White cells in women can come from the vagina, giving a falsely positive test. Hydrate, consider antibiotics and see your doctor if you develop back pain or fever.

Answered 3/22/2020

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Nothing: There are false results after the test is read past the manufacturer's recommended time.

Answered 3/2/2013

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