Methamphetamine Testing

Total House Inspections offer several different services for testing methamphetamine in houses. We complete our inspections in accordance with the New Zealand Standard 8510 for Methamphetamine Testing which was formed in July 2017.


Field Composite Test (Screening Test)

If all that you are needing to know, is if meth is present or not in a property, then a Field Composite Test is the cheapest option for you, making it ideal for likes of a Pre-Purchase Check. This method is conducted by using one sample from a laboratory supplied testing kit, across multiple locations in the house. Depending on the size of the house several testing kits may be used and then combined to form a composite test that is analysed in the lab.  


Lab Composite Test (Screening Test)

A Lab Composite Test is the best value for money if you are the owner of the property and complete regular testing. Using a laboratory supplied testing kit, an individual sample is taken from each “High Use Areas” throughout the house where meth is commonly found.  The samples are then labelled, packaged up and sent to an approved laboratory where they take small amounts from each of the sample tubes and analyses them as a combined/composite sample.  The results of the lab composite sample will then be calculated to give an average reading that is measured against the NZS 8510:2017 level.  If over the level of 1.5µg /100cm2 then an Individual / Discreet Lab sample is needed to be completed for each area. 


Because individual samples have already been taken from each area, we may not need to return to the property to lift any further samples. If it is within 30 days from the initial samples being received by the laboratory, they can re-test these samples as individual tests to determine what areas exceed the NZS 8510:2017 level and what areas are under.  Once you know where the contamination problem is in your property you can target that area, potentially reducing your decontamination costs.


Individual / Discrete Lab Tests (Detailed Assessment)

If you suspect Methamphetamine is going to be present in your property or the Laboratory Composite test exceeds the NZS 8510:2017 level of 1.5µg /100cm2, then an Individual / Discrete Lab Test is recommended.  This type of testing requires an individual sample to be taken from each area using a laboratory supplied testing kit and for each of those samples to be tested individually in the laboratory.  The results from the laboratory will give an exact reading for each sample taken and identify which are over and which are under the MoH Guideline Level.