Chek-Stix® Combo Pak Positive and Negative Urine Control Strips

25 strips per bottle Level 1 (negative) and Level 2 (positive) ready to use dip tube liquid quality controls. When used with the Siemens urinalysis strips, CHEK-STIX® Positive and Negative Control Strips provide defined results for glucose, bilirubin, ketone, specific gravity, blood, pH, protein, urobilinogen, nitrite, and leukocytes. It is used to verify the integrity of results and provide a convenient basis for a urinalysis quality control program. Each Chek-Stix Positive Control (Control +ve) Strip is a firm plastic strip to which are affixed seven separate analyte areas. These each contain one or more natural or synthetic ingredients that, when dissolved out of the analyte areas in a measured quantity of distilled or deionized water, produce a Positive Control Solution. Each Chek-Stix Negative Control (Control -ve) Strip contains six separate analyte areas. The ingredients are dissolved out of the analyte areas to produce a Negative Control Solution.