Roche Cobas Chemstrip 2 GP Urine Test Strips 200743. The Roche Chemstrip 2 GP Urine Test Strips Tests for Glucose and Protein within one minute. Roche test strips use underlying absorbent pads with a mesh laminate instead of an adhesive; this prevents chemical runoff onto adjacent strips. Easy to read distinct colors. Practically eliminates vitamin C interference. 100/BX. Priced per box. FREE Shipping!