Baseline Screening Assessment (BSA)

PURPOSE

A Baseline Screening Assessment (BSA) is a precautionary meth screening test used where there are no to low concerns regarding meth-related behaviour.

The purpose is to qualify the presence of methamphetamine residues at the property.

Sampling ALL key areas in the property, means you have high confidence if meth is present or not.

This method is commonly used to establish a baseline condition of a property at the change of tenancy, and pre purchase of property as part of due diligence condition of offer (referred to as a toxicology report), when purchasing property.

OUR PROCESS

Individual (discrete) samples are taken from key areas within the property including bedrooms, kitchen, lounge, hallway, bathroom, laundry and other living spaces, including garage and other outbuildings, and sent to the laboratory.

The laboratory then composites the samples into groups of up to 10 samples for analysis.

Sampling follows the NIOSH 9111 sampling technique, aligned with NZS8510 and the regulatory requirements associated with the Residential Tenancies (Managing Methamphetamine Contamination) Regulations 2026.

Advantages

  • One sample taken in each key area within the property
  • Samples are collected individually but analysed as composite groups to reduce laboratory costs
  • If results are low or non-detectable, no further testing is typically required
  • Overall composite sample results can later be processed individually if more information is required.
  • If analysed, individual results can be aligned directly with the relevant policy of reference

Disadvantages

  • As samples are composited at the laboratory, the initial report represents the combined result of a group of samples – this is called the theoretical maximum
  • If contamination is detected, 2nd stage processing may be required to isolate the individual sample locations

If the property is a residential rental, 2nd stage processing of the individual samples cannot be used to confirm the contamination levels of a property under the regulations; it is still a screening assessment.

A Detailed Assessment will need to be undertaken to meet tenancy tribunal obligations for reporting purposes and for the scope of works for decontaminating the property.

SERVICE STANDARDS AND PRICE

We generally get on-site within 48 hours of booking. Price is based on the speed of reporting and the property size

We offer a 5-day, 3-day and 2-day turnaround from the date the samples are taken

Pricing starts from $269 + GST.

Refer to our pricing page.

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