Blood Ketone Strips vs Urine Ketone Strips

[AngelKitty]

Hi, was wandering which out of the two is better?
Also, how often do I need to test for Ketones - only when I'm feeling lousy?

[BlueSky]

Blood ketones tests tell you how much ketones are in your blood at the time of the test. Urine ketone tests reflecty the level of ketones in your blood 2+ hours ago. So the blood ketone test is better.

Ketones build up slowly, and the timing difference is usually not important. Unless if you are using a pump and want see if there is a problem with insulin delivery. I am on MDI, and I don't ever test for ketones.