>>>Adulteration Tests
Adulteration is the intentional tampering with a urine sample by the donor to avoid detection of illicit drug use. Successful adulteration produces a false-negative drug test result.
These tests can identify adulteration (e.g., putting a substance into a specimen that is designed to mask or destroy the drug or drug metabolite that the specimen may contain or to adversely affect the assay reagent) or substitution (e.g., diluting a urine specimen with a liquid to effectively decrease the concentration of a drug below the cutoff concentration, or replacing a valid urine specimen with a drug- free specimen).
The One Step urine adulterant test strip is a semi-quantitative, color comparison screen for the detection of creatinine, nitrite, glutaraldehyde, pH, specific gravity, and oxidants/pyridinium chlorochromate (PCC) in human urine.
Creatinine - This test covers the most common form of specimen tampering, specimen dilution. Dilution using diuretics is also often referred to as “flushing”. A person may attempt to foil a drug test by drinking excessive amounts of water or diuretics such as herbal teas to "flush" the system. Creatinine and specific gravity are two ways to check for dilution and flushing, which are the most common mechanisms used in an attempt to circumvent drug testing. Low creatinine and specific gravity levels may indicate diluted urine. The absence of creatinine (<5mg/dl) is indicative of a specimen not consistent with human urine.
Nitrites – This covers a class of chemicals not normally found in human urine. Common occurrences are the additive of such products as Klear.
Glutaraldehyde - This covers a class of chemicals not normally found in human urine. Common occurrences are the additive of such products such as Clear Choice or UrinAid.
pH – Tests for the presence of acidic or alkaline adulterants in urine. This test is based on the well-known double pH indicator method that gives distinguishable colors over a wide pH range. The colors range from orange (low pH) to yellow and green to blue (high pH).
Specific Gravity – Tests for the viscosity of the urine sample i.e. testing for sample dilution. This test is based on the apparent pKa change of certain pretreated polyelectrolytes in relation to the ionic concentration. In the presence of an indicator, the colors range from dark blue or blue-green in urine of low ionic concentration to green and yellow in urine of higher ionic concentration
Oxidants and PCC – Tests for the presence of oxidizing reagents such as bleach, hydrogen peroxide and pyridinium chlorochromate
Results are obtained by comparing the colour on each of the test pads with the corresponding pad on the container colour chart label.
The test is based on the color derived from the chemical reaction between the chemical reagent on each test pad and the urine sample. A color chart indicating abnormal and normal test result color values for each of the six parameters tested is printed on the test container.
One test strip is dipped in the urine sample for 1-2 seconds immersing all reagent test pads. The strip is then blotted on its side to remove excess sample. After 1 minute the colors of the six reagent pads are visually compared to the color chart and results obtained for each of the six test parameters. An abnormal result for any of the six parameters suggests the sample has been manipulated, altered or otherwise contaminated and a new sample should be obtained for further testing.
Adulteration Test Strips - 25 Tests per Tube - SENT IN DISCREET FIRST CLASS PACKAGING - £16.99 post free to all UK destinations. (product code 1ATS)