It is an important minimally invasive blood glucose detection technique that predicting the blood glucose level by glucose concentration of the extracted interstitial fluid.However

the extracted interstitial fluid should be diluted to deliver and collect because of its small amount.Then the concentration before diluted can be calculated by the volume measured after diluted.A kind of micro flowmeter is designed and fabricated to measure the volume after diluted

a performance test experimental platform is built up to test the repeatability and linear correlation.Experimental results show that the measurement range is 4～ 16 μL and the coefficient of variation of 10 times measurement for 15 μL samples is 6.2 % and the correlation coefficient of 13 samples with different volumes is 0.988.The measurement range of micro-flowmeter is 4 ～ 16 μL which can meet the requirements of measurement.