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ketones.fyi

Ketones in urine: what each strip result means

Urine strips test for acetoacetate on six colour pads, and the scale runs from negative up to 160 mg/dL. Every pad lines up with a rough blood ketone range.

A urine ketone strip held beside the colour chart on its bottle

Blood equivalent for urine strip results

Strip padUrine (mg/dL)Acetoacetate (mmol/L)Blood, approximate (mmol/L)Stage
Negative000–0.3Not in ketosis
Trace50.50.3–0.6Light ketosis
Negative0 mg/dLTrace5 mg/dLSmall15 mg/dLModerate40 mg/dLLarge80 mg/dLVery large160 mg/dL

Every result on a strip

Check your own reading