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Report Abuse. The colors on the urine testing strip indicate the different concentrations of sugar in the urine. for example, the dark brown shade indicates highest concentration(++++),whereas light blue indicates nil sugar in the urine.There are other shades inbetween indicating 1/2,1,1 1/2 percent sugar.eport Abuse. The colors on the urine testing strip indicate the different concentrations of sugar in the urine. for example, the dark brown shade indicates highest concentration(++++),whereas light blue indicates nil sugar in the urine.There are other shades inbetween indicating 1/2,1,1 1/2 percent sugar.
For example, a slight color change in the test pad for protein may indicate a small amount of protein present in the urine whereas a deep color change may indicate a large amount. The most frequently performed chemical tests using reagent test strips are: 1  Specific gravity.ormally, a few white blood cells (see microscopic examination) are present in urine and this test is negative. When the number of WBCs in urine increases significantly, this screening test will become positive. When the WBC count in urine is high, it means that there is inflammation in the urinary tract or kidneys.