LW Scientific Test Strips Single Parameter for Blood in Urine 12 Vials of 100/Case. The results can be easily read manually using the color chart on the vial. For quantitative results the strips can be read in automated strip readers. Unopened vials have a long shelf life. A Clinical Laboratory Improvement Amendment (CLIA) Certificate of Waiver is required in order to purchase the item. Specifications for LW Scientific Test Strips Single Parameter for Blood in Urine: Manufacturer: LW Scientific Quantity: 12 Vials of 100 Last Chance: Yes Package Contents: LW Scientific Test Strips Single Parameter for Blood in Urine LW Scientific URS-01PR-BL77: Test Strips Single Parameter for Blood in Urine 12 Vials of 100/Case