By the early 1990s, pharmaceutical and diagnostic companies have been working on the antigen-antibody (Ag-Ab) pairs to DOA in urine. Lateral-flow methods utilized in pregnancy tests proved to be the most reliable and easiest to use, and both dipstick- and cassette-based lateral-flow DOA devices started to appear in the market. Cassettes hold the lateral-flow device in place within a plastic shell. The upper shell is configured with a well for the specimen to be placed over the absorbent pad, and a window for viewing the visual endpoint color-change reaction (see Chapters 3-5).
The introduction of these products, however, created special concerns in workplace DOA testing applications. Pregnancy tests, designed for home use by patients, were ideal in their design for self-collection, interpretation, and receipt of the test results in the privacy of the home (8). For workplace DOA testing, there exist three distinct parties—a donor (employee), a collector (nurse or technician), and a customer (employer) who has ordered the tests and is the party authorized to receive the test results. Conventional POCT have missed, or ignored, this important distinction.
Was this article helpful?
Thousands Have Used Chemicals To Improve Their Medical Condition. This Book Is one Of The Most Valuable Resources In The World When It Comes To Chemicals. Not All Chemicals Are Harmful For Your Body – Find Out Those That Helps To Maintain Your Health.