Urine analysis. General practice doctor's hands hold up a multiple test stick dipped in urine, against a reference chart. This is the SG8 Multistix urine test. The colour of each pad is checked against the chart after a specific amount of time has elapsed. The pads test for: protein (after 60 seconds); pH (after 60 seconds); blood (after 60 seconds); specific gravity (after 45 seconds); ketones (after 40 seconds); glucose (after 30 seconds).