Is it possible to
cheat the iCup® drug screen by substituting or
adulterating the specimen? No. The iCup™
A.D. contains a specimen validity test or SVT strip that
verifies the validity of a specimen. The SVT strip
checks for oxidants, specific gravity and pH in the
specimen. For example, if someone tries to
substitute water for urine, the specific gravity
indicator will show an abnormal reading.