THE ESTIMATION OF PHENOTHIAZINES USING CHEMICALLY IMPREGNATED PAPER STRIPS
Abstract
The Forrest tests and the test strips give essentially the same results. These methods for testing for phenothiazines excreted in the urine require some caution on the part of the observer. A positive test may be indicative of phenothiazine intake, but also may be due to bile pigments or other excretion products. A negative test may be indicative of no drug intake or low intake. When interpreted with caution, these tests remain valid for estimating phenothiazine intake.
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