Ketostix 2

Ketostix measure urine ketones.

Ketodiastix 300

Ketodiastix measure both urine glucose and urine ketones.

Because most urine tests measure acetoacetic acid, and not the most commonly found beta-hydroxybutyrate acid, it is possible to have ketones present and get a negative urine test result.

Further, it's also possible to have high levels of beta-hydroxybutyrate acid, get a negative urine ketone test result, but to have the test turn positive as the ketosis improves, due to the tests' measuring acetoacetic acid and not beta-hydroxybutyrate acid. [1]

The following medications and/or problems with urine samples can produce false negative or false postive results when testing urine for ketones.

See Urine testing stix-Reading Results for examples of ketodiastix and ketostix color charts.

If your pet is taking any type of vitamin supplements, it should be noted on his or her medical records. Knowing that he/she is using them means being able to factor them into interpretations of test results.


  1. Positives, False Negatives.
  2. Valproic Acid. NetDoctor UK.
  3. Suprax/Cefixime.
  4. Levadopa.
  5. 5.0 5.1 5.2 Sine, Cheryl S, et. al. (2003). Urinalysis Dipstick Interpretations-Ketones. University of Georgia.
  6. 6.0 6.1 6.2 Hanas, Ragnar. Measuring Ketones in Blood. Children With Diabetes.
  7. 7.0 7.1 Taylor, Judith A. (November 2006). Clinical Lab Medicine Harvesting The Gold: Interpretation and Techniques of Urinalysis. District of Columbia Academy of Veterinary Medicine.
  8. Tricyclic Antidepressant. Wikipedia.
  9. Captopril. Wikipedia.
  10. 10.0 10.1 Ketone Test Explained. Diabetes Explained.
  11. Phenazopyridine. Merck Manuals Online.
  12. Ketones. Medline Plus.
  13. Precision Xtra Blood Ketone Test Strips. Abbott Diabetes Care.
  14. 14.0 14.1 Hanas, Ragnar. Measuring Ketones in Urine. Children With Diabetes.
  15. Taylor, Judith A. (November 2006). Urinalysis: What Is Abnormal?. District of Columbia Academy-Veterinary Medicine.
  16. Dehydration and Ketosis. North American Veterinary Conference (2003).
  17. Preanalytical Variables in Urine Testing. BD Diabetes (2006).
  18. Consequences of inappropriate urine specimen storage. Chronolab.
  19. Precision Xtra-When is it Recommended to Test?. Abbott Diabetes Care.

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