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.

Blood equivalent for urine strip results
| Strip pad | Urine (mg/dL) | Acetoacetate (mmol/L) | Blood, approximate (mmol/L) | Stage |
|---|---|---|---|---|
| Negative | 0 | 0 | 0–0.3 | Not in ketosis |
| Trace | 5 | 0.5 | 0.3–0.6 | Light ketosis |