VeriCheck®
U-7 SVT
Drug Adulteration Test Strips
Adulterant testing is used to confirm the validity of the specimen by checking 7 different parameters.
Detect dilution or “flushing” of the system
Protect against false negatives
Protect against sample altering
Detects oxidizing / bleaching agents
These 7 parameters can be tampering your specimens:
Creatinine
Tests for sample dilution.
In this assay, creatinine reacts with a creatinine indicator in an alkaline condition to form a purplish-brown colour complex. The concentration of creatinine is directly proportional to the colour intensity of the test pad.
GLUTARALDEHYDE
This test screens for the presence of exogenous aldehyde. Adulterants like UrinAid and Clear Choice contain glutaraldehyde which could cause a false negative result by disrupting the enzyme used in some immunoassay tests.
pH
Tests for the presence of acidic or alkaline adulterants. This test is based on the well-known double pH indicator method that gives distinguishable colors over a wide pH range.
Oxidants
Adding bleach or other oxidants to urine can “destroy” the drug molecules in the urine specimen.
Pyridinium Chlorochromate
This adulterant, sold under the brand name UrineLuck produces oxidants that should not be present in urine and may indicate that the sample has been adulterated.
NITRITES
Commercial adulterants such as Klear and Whizzies will cause a positive result for nitrites. These products work by oxidizing the major cannabinoid metabolite THC-COOH. Normal urine specimens should contain no trace of nitrites and positive results for nitrites usually indicate the presence of an adulterant.
Specific Gravity
Tests for sample dilution.
The normal range is from 1.003 to 1.030. Values outside this range may be the result of specimen dilution or adulteration.
Cups and dips can be configured with the below adulterant test configurations:
- SVT3A – 3-panel SVT strip CR SG PH
- SVT3B – 3-panel SVT strip NI OX GL
- SVT3C – 3-panel SVT strip CR PH OX
- SVT6 – 6-panel SVT strip CR SG PH NI OX GL
This is a screening test device and does not provide a definitive test result. Laboratory confirmatory testing is recommended to confirm any non-negative test result.
Detect dilution of system 'flushing'
Protect against sample altering and false negatives
