kyas numbers in morning yesterday were over 250 So I gave 1 unit. Did fairly well yesterday morning. Evening number was still over 250 gave 1 unit. Why did it drop to 75 in the 4 hour mark? Same food amount from morning to evening. 1 1/4 cans fancy feast chicken also if I have human meter should I be straight reading the numbers as they are or since I compared with vets marchine and my meter was 30 points below theirs add 30 points to her numbers when I get them?