Urine Test Strip Quantitative Assay with a Smartphone Camera

Figure 4

(a) Examples of urine test strips cut sensitive to proteins exposed to various human serum albumin concentrations indicated under each picture. (b) Use of urine test strips for a protein assay represented by measuring human serum albumin. Each sample was measured five times, and error bars indicate the standard deviation. Three curves were made for each RGB color channel.

(a)

(b)