I have a Ketomojo Blood Ketone Test Kit. I also have some Ketodiastik urine test strips. I primarily use the blood meter since it's more immediate, however it only gives a number so I refer to the urine strips for the descriptive value (trace, small, medium, large). The blood meter is in mmol/L, the urine strips in mg/L, and the conversion from mmol/L to mg/L is x18. So I would take my meter reading, x18, and then read on the test strip to see where we were at. Yesterday, Sebastian threw a 2.2 on the meter which, based on the conversion factor, would be 40 on the urine strips or "moderate". Obviously concerned, I added that info to yesterday's thread and went into crisis management mode. Then, people started saying "ketones start to show up in cat's blood at about 2.4 - 2.5 on a human ketone/BG meter", referencing this post and the attached research studies. This made no sense to me. I've gotten a wide range of readings on the meter, 0.2, 0.5, 1.1, etc etc etc, so if "ketones don't show until 2.4", what was my ketone meter reading at those <2.4 values? I re-read the insert from the ketone meter. I also skimmed over the research papers. So far I've only come up with one explanation to reconcile the disconnect: The ketone meter says it measures "Beta-Hydroxybutyrate". So the explanation I came up with is that the presence of that in the blood means different things for cats than it does for humans and it's not until that gets to 2.4 that we starting seeing "ketones" in the cat. So, if that's the case, how do interpret the blood meter readings to know how Sebastian's ketones are? How do I know when he's at trace, small, medium, or large levels? Tagging a couple people who were supplying info in yesterday's thread (@Bobbie And Bubba @Crista & Ming @Christie & Maverick) as well as @Jill & Alex (GA) as the original source of the info.