Proteins, nucleic acids are best example of natural polymers. Similarly cellulose is also a natural polymer which acts as main structural component of plants. Usually natural polymers are composed by condensation polymerisation with the elimination of water molecule.
Drug-Laboratory Test Interactions. False-positive urine immunoassay screening tests for phencyclidine (PCP) and amphetamine have been reported in patients taking venlafaxine. This is due to lack of specificity of the screening tests. False positive test results may be expected for several days following discontinuation of venlafaxine therapy. Confirmatory tests, such as GC/MS will clear that misconception up asap...or if you are not using pcp and your dr is sceptical.
4. Name four confirmatory tests performed on urine and the constituent of urine detected.(4 points)a.b.c.d.5. State an abnormal condition which would cause the following constituents to be present in theurine (2 points):a. bilirubinb. nitritesc. urobilinogend. leukocytes6.ilirubin is a breakdown product of hemoglobin which produces an extremely yellowcolor in urine and may be an indication of liver disease, hepatitis or bile duct obstruction. Samples suspected of containing bilirubin should be handled cautiously because of the possibilityof hepatitis.