Lab Composite Screening Test
This type of testing is suitable for:
- Home buyers
- Pre-purchase inspections
This is another screening option, which provides information about the presence of methamphetamine in a property.
A Lab Composite test is when, up to 10 individual samples are taken and sent to a laboratory, (1 sample per tube only). However, instead of being tested individually, a sub-sample of each individual swab is extracted separately by a lab technician. These are then combined into a composite sample which is then tested to give you your result.
If there is a high result from the composite sample of over 1.5 µg/100cm2, the laboratory can then retested these as individual samples without a return visit by the sampler to the property. The laboratory can only hold the individual samples for a total of 30 days.
If individual samples need to be analysed due to a high level of contamination over 1.5 µg/100cm2 This can only apply to a home no larger than 80m2. If your home is larger than 80m2 you can still use the Lab Composite method but if the results come back as contaminated you will then need to go straight to a Detailed Assessment.
In situations where there is suspicion of contamination or you have been told by a neighbour or friend, then it is stated in the New Zealand standard NZS:8510:2017 that you must go directly to a Detailed Assessment.
The lab is testing for methamphetamine, amphetamine, ephedrine, and pseudoephedrine.
If you have any questions at all, or are confused as to which test best suits your needs, then please contact us and we will be happy to help.