Table 2. The difference between glucometer (No. 1–11) and laboratory method (No. 12) in tail-tip blood glucose levels.

	Glucose range in No. 12 (mg/dL)
	–99		100–199		200–299		300–
	(mg/dL)	(%)	(mg/dL)	(%)	(mg/dL)	(%)	(mg/dL)	(%)
Glucose value (No. 1–12) (mg/dL)	13.1 ±  3.7	16.1 ±  4.3	18.2 ±  4.7	11.9 ±  3.4	39.0 ±  20.1	16.8 ±  8.2	91.1 ±  32.2	25.6 ±  9.7
Glucose value (No. 2–12) (mg/dL)	31.4 ±  3.6	37.3 ±  4.7	23.8 ±  3.6	15.9 ±  2.4	47.4 ±  21.3	20.8 ±  8.8	144.4 ±  40.8	39.1 ±  12.0
Glucose value (No. 3–12) (mg/dL)	− 11.9 ±  2.6	− 13.5 ±  2.4	− 3.2 ±  4.8	− 3.0 ±  3.3	13.5 ±  14.5	6.2 ±  5.9	57.4 ±  36.3	15.9 ±  10.8
Glucose value (No. 4–12) (mg/dL)	− 16.9 ±  5.4	− 19.3 ±  5.4	1.9 ±  3.9	0.3 ±  2.8	13.0 ±  12.4	5.8 ±  5.0	52.7 ±  35.7	14.7 ±  10.6
Glucose value (No. 5–12) (mg/dL)	5.4 ±  4.6	7.9 ±  5.0	20.7 ±  5.2	13.2 ±  3.4	48.4 ±  15.1	20.8 ±  6.4	72.1 ±  31.6	20.8 ±  9.2
Glucose value (No. 6–12) (mg/dL)	− 17.9 ±  4.6	− 20.6 ±  4.0	− 27.7 ±  4.1	− 18.8 ±  2.8	− 29.6 ±  29.6	− 11.9 ±  6.3	− 27.4 ±  27.0	− 7.1 ±  7.8
Glucose value (No. 7–12) (mg/dL)	− 5.7 ±  5.6	− 7.0 ±  6.6	− 6.2 ±  3.6	− 5.1 ±  2.5	15.9 ±  20.6	7.6 ±  8.3	74.7 ±  38.5	19.5 ±  11.7
Glucose value (No. 8–12) (mg/dL)	10.1 ±  4.3	12.5 ±  4.7	15.9 ±  4.5	10.1 ±  3.0	36.5 ±  17.9	15.9 ±  7.3	74.4 ±  35.6	20.8 ±  10.6
Glucose value (No. 9–12) (mg/dL)	− 1.4 ±  3.7	− 1.2 ±  3.8	4.7 ±  4.0	2.7 ±  2.8	11.9 ±  16.3	5.7 ±  6.5	74.7 ±  41.3	19.9 ±  11.9
Glucose value (No. 10–12) (mg/dL)	− 9.1 ±  3.5	− 10.0 ±  3.4	− 1.6 ±  4.1	− 1.9 ±  2.9	20.7 ±  18.7	8.9 ±  7.6	70.4 ±  38.5	19.2 ±  11.5
Glucose value (No. 11–12) (mg/dL)	3.8 ±  4.0	4.9 ±  4.3	26.8 ±  6.9	17.4 ±  4.7	79.4 ±  19.9	33.1 ±  8.2	20.9 ±  73.3	2.8 ±  21.4

values are mean ±  SE. Sample number at − 100 mg/dL, 100–200 mg/dL, 200–300 mg/dL and 300– mg/dL glucose range is 6, 18, 10 and 6 respectively.