Urine analysis: multiple test stick, about to be immersed in a urine sample bottle. The test stick is soaked in urine, removed and the colour of each pad checked against a reference chart after a specific amount of time has elapsed. The pads test for (top to bottom on the stick): urobilinogen (after 45 seconds), blood (40 seconds), bilirubin (20 seconds), ketone (15 seconds), glucose (30 seconds), protein & pH (immediately) & specific gravity (45-60 seconds).