Some info from the topic I referenced:
Used ReliOn Micro meter
Boo
~ 10 years old, DSH, spayed, successfully treated acromegliac, no longer diabetic ('cause acro is gone), CRF
+0 60
+1 58
+2 66
Mika
~ 2 years old, DSH, spayed, no health problems
+0 36/39 (I tested twice since it was so low; and this is AFTER lots of struggling)
+1 47 (calm)
+2 53 (calm)
Socks
Pretest 66mg/dl
+1 71
+2 75
+3 86
+4 78
+5 69