Urine Samples to Monitor Diabetic Dogs and Cats

Testing urine of diabetic dogs and cats can be used to look for:

  • Hyperglycaemia in a stable diabetic patient
  • Ketones
  • Recurrent hypoglycaemia

Glucosuria reflects hyperglycaemia in the past and does not indicate the current status or reflect hypoglycaemia. Glucosuria is not a very reliable method of monitoring diabetes mellitus and should not be used on its own to adjust an animal's insulin dose.


Urine monitoring can be used once an animal is known to have blood glucose concentrations in an acceptable range. In this case it is a quick and easy method of detecting hyperglycaemia. This should then be investigated further by measuring blood glucose concentrations.


Urine monitoring is a quick and easy method of detecting ketones (ketonuria) and hence a potential emergency situation. See diabetic ketoacidosis.


In diabetic cats that are well controlled the urine should be free of glucose for most of each 24 hour period.

Monitoring of urine for glucose can be useful in diabetic cats that are not yet stable and that have problems with recurrent hypoglycaemia. Here it is used to identify the absence of glucose. For example, a cat that has no glucose in morning samples may be at risk of hypoglycaemia and/or maybe going into diabetic remission.

Urine Samples help to monitor diabetic dogs and cats

Urine only tests positive for glucose if the plasma glucose concentration remains abot the renel threshold for a substantial period.