We offer a range of meth screening services, so that you can choose the type of screening that is most appropriate for your situation. Our screening services are conducted using the NIOSH Method 9111 (methamphetamine on wipes by liquid chromatography – mass spectrometry).
Base Composite ScreenBreakdown:
In a Base Composite Screen , the field sampling technican takes multiple samples from throughout the property he inserts the swabs samples into a single test tube. The purpose of this screen is to assertion and validate for the client whether there is any traces of methamphetamine present.
If the accumulative result of the samples indicates the presence of meth above 0.5μ g/100cm², we would need to complete a detailed forensic assessment to establish & isolate which rooms require decontamination.Positives:
As the screening company is only being charged for sending minimal test tubes to the laboratory the cost to the client is lowerNegatives:
Because all swab samples are inserted into the same sample test tube there is no way of knowing which area holds contamination so there is a need to re-visit the property to gather individual samples if the original screen shows contamination.
Laboratory Composite Forensic AssessmentBreakdown:
This type of Screening is similar to a detailed forensic assessment where a field sampling technican takes individual swab samples in adherence with NIOSH 9111. Samples are taken from every room and each sample is held in its own tube. Samples are analysed together at the lab, to provide an average reading for the entire property. If the reading is above 0.5μg/100cm², individual samples can be re-analysed (at an additional cost per sample) to establish which rooms have the problem. There is no need to revisit the property on this occasion.Positives:
Because the swab samples are already held individually at the laboratory, should the batch show contamination the laboratory can quickly re-run the samples individually to give you a break down of contamination on each sample without the need for a field sampling technician to re-visit the property.Negatives:
The initial cost of the laboratory composite is more expensive than a Base composite screen so this type of test is normally designed for clients who already have a suspicion there is contamination within the property.
Detailed Forensic AssessmentBreakdown:
This type of screening is required when a Base Composite Screen reveals a result above 0.5μg/100cm². Analysing rooms individually will identify which rooms require decontamination. Samples are taken from each room for individual analysis. The property at this stage is deemed unsafe and extra precaution is taken by our field sampling technicans. THIS SCREENING IS ALSO CARRIED OUT POST DECONTAMINATION TO CLEAR A PROPERTY PRIOR TO A CLEARANCE BEING ISSUEDPositives:
Establishing 100% where the contamination is present inside the property will insure the clean up costs are accurate and no excess is spent. More than 50% of cases the contamination is isolated to only a limited area in the property which saves thousands in clean up costs knowing where the contamination is present.Negatives:
Every room in the property needs a swab sample taken which adds to the screening cost.
If you’re not sure which type of screening service would be best for your situation, ask us for advice. We can make a recommendation based on whether the chances of finding meth residue are high, medium or low, based on what you know about the building’s history.