Please note that this product requires overnight shipping. This product cannot be shipped on a Friday.
iScreen® Urine Drug Control Kit (includes a positive and negative vial, 20 mL each)
External controls are intended for use as quality control urine to monitor
the precision of laboratory urine toxicology testing procedures for the analytes
listed in the package insert. The external quality controls are designed to work
with any of our urine drug screens. Available in both 5 mL and 20 mL options,
the liquid solution vials are convenient for any office. Refrigeration is required.