The number of COW laboratories has steadily increased over time. In 1992, it was
estimated 20% of laboratories would be COW. In 2002, 54 percent are COW.
Responses on the survey evaluation form called the visits a good idea, and valuable
for assuring good performance. Well-performed waived testing is an important tool
for patient care and is supported by CMS. It will continue to be used in a variety of
settings.
