Comparison of Performance of Photodiodes with Different Active Areas Using Acrylic and Quartz Cuvettes for Spectrophotometry in Direct Measurements of Glucose in Water and Human Blood Plasma by Optical Means Using Near-Infrared

Table 5

Glucose measurement using active area of 1.5, 1, 0.5, and 0.06 mm.

Glucose concentration (mg/dl)	Voltage using 1.5 mm active area (V)	Decrease using 1.5 mm active area (mV)	Voltage using 1 mm active area (V)	Decrease using 1 mm active area (mV)	Voltage using 0.5 mm active area (mV)	Decrease using 0.5 mm active area (mV)	Voltage using 0.06 mm active area (mV)	Decrease using 0.06 mm active area (mV)
0	3.253	NA	1.391	NA	443	NA	20	NA
100	3.245	8	1.386	5	441	2	19.9	0.1
200	3.235	10	1.383	3	437	4	19.7	0.2
300	3.224	11	1.378	5	436	1	19.7	0
400	3.212	12	1.371	7	434	2	19.7	0
500	3.205	7	1.367	4	431	3	19.6	0.1
600	3.191	14	1.362	5	430	1	19.6	0
700	3.182	9	1.36	2	428	2	19.5	0.1
800	3.169	13	1.356	4	427	1	19.5	0
900	3.155	14	1.353	3	426	1	19.4	0.1
1000	3.144	11	1.35	3	424	2	19.4	0