Methamphetamine Testing

Laboratory Testing

Healthy Homes NZ Ltd is currently working towards compliance to meet the new Methamphetamine Standard NZS-8510:2017          


Methamphetamine in accordance with NZS-8510:2017

The level of methamphetamine is 1.5 µg/100 cm2 (1.5 micro-grams of methamphetamine per 100 square centimeters of surface sampled) in ‘high use areas’ of affected properties should be decontaminated to, regardless of whether the properties were involved in the production or use of methamphetamine. High use areas are defined as those areas that can be easily accessed and are regularly used by adults and children.

For ‘limited-use areas’, such as crawl spaces likely to be accessed only by adults for short periods of time, the level is 3.8 micro-grams per 100 cm2. (1.5 micro-grams of methamphetamine per 100 square centimeters of surface sampled)  Limited-use areas are places where only adults can access and are rarely used, for example roof cavities away from ducts or vents.

Methamphetamine  testers now are to be totally independent from decontamination contractors. This is great and something that we’ve always pushed for. It is now a conflict of interest for decontamination companies to also do testing.


Two new qualifications to consider when selecting a tester
  • Screening samplers are required to have done an applicable NZQA unit standard for screening sampling. Since these new titles have just been created, this unit standard doesn’t exist yet so no one is technically qualified. Screening samplers will be qualified to carry out screening assessments only. Commonly used terms for screening tests include field test or composite tests.
  • Accredited samplers require a higher standard of qualification and are considered competent and authorised to take samples by an accredited body, by using either:

AS/NZS ISO/IEC 17020 – Conformity assessment – Requirements for the operation of various types of bodies performing inspection.

AS/NZS ISO/IEC 17025 – Specifies the general requirements for the competence to carry out tests and/or calibrations including sampling.

Healthy Homes NZ Ltd uses Analytica Labs and R J Hills Labs. and is a registered sampler with both of these labs who are                              AS/NZS ISO/IEC 17025 accredited.


There are 3 different types of laboratory testing to suit your needs.


Pricing Page


The IANZ Accredited laboratory test for methamphetamine, amphetamine, ephedrine and pseudo-ephedrine.

Lab Composite Screening Test 


This type of testing is suitable for:

  1. Home buyers
  2. Pre- purchase inspections
  3. Just needing a yes or no answer with a level


  • This is when, up to 10 samples are taken and sent to a laboratory, (5 samples per tube only).  They test for methamphetamine, amphetamine, ephedrine and pseudo-ephedrine.  The lab then takes a percentage of each tube, and combines this to create a lab composite level.    If the results of the combined tubes come back over the 1.5ug/100cm2, then you have 2 options:


  • OPTION 1: you can request that each 10 samples be individually tested.  See pricing page  This way only the rooms that are over the 1.5ug/100cm2 need a Detailed Assessment at every 10m2 or smaller if divided by a door.  See pricing page
  • OPTION 2: you can go straight to the Detailed Assessment of the entire house being tested at every 10m2 or smaller if divided by a door. See pricing page


Composite Screening Test:  otherwise known as: Field Test.  


This type of testing is suitable for:

  1. landlords
  2. insurance companies
  3. property managers
  • This is when, up to 10 samples, are taken from 10 separate areas in the house using only 2 swabs and sent to a laboratory (5 rooms per tube only) Each tube has been labelled with the 5 different areas tested. You will get a level of methamphetamine and related compounds per tube.  If only 1 tube comes back with a positive result, over the 1.5ug/100cm2, you will know that only those 5 rooms relating to that tube will, therefore need, a Detailed Assessment at every 10m2 or smaller if divided by a door.
  • If one tube comes back under the recommended level, then no further action is required relating to the rooms tested in that tube.
  • However, if both tubes come back over the recommended level of 1.5ug/100cm2, then the entire house will need a Detailed Assessment at every 10m2 or smaller if divided by a door


Detailed Assessment: otherwise known as: Discrete Testing – individual – room by room

Do you already suspect methamphetamine, or the next door neighbour has said there has been suspicious behavior in your rental property, then according the NZS-8510:2017 then we need to do a Detailed Assessment.

  • This is when one sample per tube is taken and sent to a laboratory. This is done at every 10m2 or smaller if divided by a door.  This will give you a level of methamphetamine and related compounds per sample taken.  You will know exactly which areas are contaminated and only the samples over the level of 1.5ug will need to be decontaminated.  Once decontamination has taken place those rooms will need to be re-tested using this method.


If you are not sure as too which test is best to suit your needs, please ring Head Office and we will be happy to discuss the process with you.


Field Blank

The object of a field blank, according to NZS 8510:2107, is to ensure the consumables used for sampling remain free of contamination and to demonstrate that cross contamination has not occurred.

NZS 8510:2017 suggests 1 field blank be done per property.   If more than 20 samples are taken in one screening then a ratio of 1:20 will apply.

Also, 1 field blank is to be taken at every Detailed Assessment.

Remember any standard is only a guideline for any profession to run by.  It is not mandatory, so if you do not wish to use a blank field test,  please let us know in writing.

Warrant your property:

Protect your family, health and investment by letting us warrant your property.

When we have done either a composite or individual lab based test (see above for details) on your dwelling and we have a negative result, we will then place a warrant on your door.

This will let your tenant know you mean business and should deter them and their visitors from smoking meth in your property.

Do not let your investment be destroyed by methamphetamine, test it today and let us give your property a clean bill of health.

Any questions please call for more information