VEHICLE CONTAMINATION TESTING

Vehicle Meth Testing: Cars, Caravans & Fleets

Test Australia tests cars, caravans, motorhomes and boats for methamphetamine residue. It does not clean or decontaminate them, and it does not recommend cleaners. Testing before cleaning shows whether residue is present and where. Verification sampling after cleaning reports the results against the criterion named in the report.

“A car cabin is a small enclosed space, so residue from smoking settles over a much smaller surface area than in a house. Our suitably qualified occupational hygienists test cars, vans, caravans and boats, and vehicle results can be higher than those we find in residential properties.”

— Dan Neil, Principal Occupational Hygienist and Chartered Chemist, MRACI CChem

Vehicles We Test

Cars & SUVs
Caravans
Motorhomes & RVs
Campervans
Fleet Vehicles
Hire Cars
Boats & Marine Craft
NATA-accredited Meth Laboratory
Chartered Chemist
NIOSH 9111 Methodology
Independent Assessment
8 Capitals Attended in Person

Why Vehicles Need Their Own Assessment

A vehicle cabin is small, enclosed and full of fabric, so residue from smoking settles over a much smaller area than in a house.

How Residue Gets Into a Vehicle

Methamphetamine residue can come from smoking in the vehicle, from handling or transporting the drug, or, less often, from manufacture. Residue settles on hard surfaces, and fabric such as the headliner, seats and carpet can hold it.

Vehicle samples can return results well above the 0.5 µg/100 cm² investigation level. No concentration on its own shows that a property or vehicle was used for manufacture. An opinion on manufacture rests on manufacture-specific markers and site evidence, assessed together, and the report states its limits.

What the Numbers Mean

0.5 µg/100 cm² is the residential indoor-surface investigation level for methamphetamine in the Australian Government’s Clandestine Drug Laboratory Remediation Guidelines (2011). A result above it triggers further investigation or remediation. It is not a line between safe and unsafe, and it applies whether residue came from use or manufacture.

Test Australia has found no Australian criterion written for vehicles. The report states which criterion results are compared against and why.

Vehicles We Test

Cars and SUVs, vans, utes, campervans, caravans, motorhomes, hire and fleet vehicles, and boats.

A caravan or motorhome used as somewhere to live is sampled more like a small home, with more sample locations than a car.

Want to screen first? A DIY meth kit is a presumptive screen, and positives should be confirmed by laboratory testing.

When Vehicle Testing Helps

The same method and the same report, whoever commissions the work.

Pre-Purchase Buyers

Used cars, private sales and auction purchases. Vehicle history checks do not record drug residue, so testing gives you evidence before you commit.

Rental and Fleet Operators

Testing rental and fleet vehicles between users documents their condition.

Insurance Claims

If a vehicle is the subject of an insurance claim, any party to the claim can commission the assessment, and the report is the same whoever commissions it.

Stolen Vehicle Recovery

A vehicle recovered after theft may have been used by others. Testing documents its condition before it goes back into use.

Caravan & Motorhome Buyers

Caravans and motorhomes used as somewhere to live are sampled more like a small home, with more sample locations than a car.

Finance Companies

Testing repossessed vehicles before resale documents their condition for the next buyer.

Vehicle Dealers

Testing trade-ins and auction purchases before resale provides documented results for buyers to review.

Vehicles Released After Investigation

Owners of vehicles released after a police investigation can commission an independent assessment of the vehicle’s condition.

How We Test a Vehicle

Five steps from enquiry to a signed report: Test Australia samples, a NATA-accredited laboratory analyses, and you receive a signed report.

1

Enquiry and Fee Proposal

Tell us the vehicle, where it is parked and the decision the results will inform. Every assessment is scoped to the question being asked, and we reply with the scope, fee and available dates.

2

Inspection and NIOSH 9111 Sampling

Test Australia in your city records the make, model, odometer and photographs, then samples touched and settled surfaces in the cabin, using the NIOSH Method 9111 wipe technique over a measured template area, with blank and quality-control samples and chain-of-custody records.

3

Independent Laboratory Analysis

Samples are analysed by LC-MS/MS at an independent NATA-accredited laboratory. Results are reported in µg/100 cm². Test Australia itself is not NATA-accredited.

4

Signed Report

Signed report, interpreting the laboratory results, including where results were highest and an opinion on manufacture only where the evidence supports one. Our reports set out the method, chain of custody, results, uncertainty and limitations so that any party can test them. Whether a court, tribunal or insurer relies on a report is a decision for them.

5

Verification After a Clean

If the vehicle is cleaned by others, verification sampling afterwards reports the results against the named criterion. Decisions on cleaning and replacement are for the remediator, insurer and owner.

How Your Vehicle Is Sampled

Sampling is planned around the vehicle and the question being asked.

Test Australia samples touched and settled surfaces in the cabin. The number of samples is set for each vehicle and recorded in the report, so the results describe the vehicle as a whole rather than one surface.

Caravans and Motorhomes

A caravan or motorhome used as somewhere to live is sampled like a small home. The number of samples depends on its size and layout. Contact us for a fee proposal for a caravan or motorhome.

What a Vehicle Report Contains

The contents of each report are agreed in your fee proposal.

You receive a signed report that sets out the vehicle details, the method, the results, the criterion each result is compared with, and the limitations.

Limits of a Vehicle Test

Results describe only the surfaces sampled, on the day they were sampled. A test cannot show who caused the residue or when, and no concentration on its own shows manufacture. Panels, ducts and fabric that were not sampled are not covered. Whether a vehicle is bought, kept, cleaned or claimed for is a decision for the owner, buyer or insurer.

Screening Kit or Professional Test?

A DIY kit is a 5-minute lateral flow presumptive screen with a cut-off of 0.5 µg/100 cm². It gives a positive or negative for one surface. It does not measure a concentration, is not laboratory analysis and comes with no report.

A professional test has Test Australia collect wipes to NIOSH Method 9111, a NATA-accredited laboratory measure each sample by LC-MS/MS, and a Chartered Chemist review and sign the report. Choose it for a purchase, a claim, a dispute or a check after cleaning.

What Affects the Fee

The type and size of the vehicle (a caravan or motorhome used as a home needs more samples than a car), the purpose, such as a pre-purchase check, a claim or verification after a clean, and travel outside the metro area. Every assessment is scoped to the question being asked.

Request a Fee Proposal

Results, Cleaning and Claims

What the report covers, and what it leaves to others.

How Results Are Reported

Each result is reported in µg/100 cm² with its sample location. Test Australia has found no Australian criterion written for vehicles. The report states which criterion results are compared against and why. We do not label a vehicle “use” or “manufacture” from a concentration band.

Cleaning and Replacement

The report states the results against the named criterion and the verification sampling that would be needed after decontamination. Decisions about cleaning, replacement and cost are for the remediator, insurer and owner.

Test Australia does not clean, detail or remediate vehicles, and receives no income from cleaning, remediation or referral arrangements.

Insurance Claims

If a vehicle is the subject of an insurance claim, any party to the claim can commission the assessment, and the report is the same whoever commissions it.

Our reports set out the method, chain of custody, results, uncertainty and limitations so that any party can test them. Whether a court, tribunal or insurer relies on a report is a decision for them.

History Checks

A PPSR search covers matters such as finance owing and whether a vehicle has been reported stolen or written off. It does not record drug residue, so testing is the way to find out.

Vehicle Meth Testing by City

Test Australia attends in all eight capital cities: Adelaide (SA), Brisbane (QLD), Sydney (NSW), Melbourne (VIC), Perth (WA), Darwin (NT), Canberra (ACT) and Hobart (TAS). Regional areas outside each metro area are by arrangement. Each city page, listed below by state and territory, covers local rules and how we work there.

Vehicle Meth Testing FAQ

No Australian criterion is written specifically for vehicles, and the report states which criterion results are compared against and why. For homes, the Clandestine Drug Laboratory Remediation Guidelines (2011) set a 0.5 µg/100 cm² residential investigation level for residue from use or manufacture. Exceeding it triggers investigation or remediation. It is not a line between safe and unsafe.
There is no set price, because every assessment is scoped to the question being asked. Request a fee proposal for the scope, fee and available dates. Caravans and motorhomes need more samples than a car, depending on size and layout. Purpose (pre-purchase check, claim or verification after a clean) and travel outside the metro area also affect the fee.
That depends on the materials affected and the results. The report states the results against the named criterion and the verification sampling that would be needed after decontamination. Decisions about cleaning, replacement and cost are for the remediator, insurer and owner. Test Australia does not clean or remediate.
No. A PPSR search covers matters such as finance owing, and whether a vehicle has been reported stolen or written off. It does not record drug residue, and commercial history reports built on similar data do not either. Laboratory testing of wipe samples is how methamphetamine residue in a vehicle is measured.
Disclosure obligations depend on the type of sale and your circumstances. If you know or suspect a vehicle is contaminated, get independent legal advice before you sell. Our report documents the results so that buyer and seller can see the same evidence.
Yes, with the seller’s agreement and access to the interior. For a private sale you can ask for a pre-purchase inspection, and for a dealer purchase you can ask for the contract to be subject to a satisfactory inspection. Test Australia attends in all eight capital cities, and regional areas outside each metro area are by arrangement.
No. Test Australia tests and gives a signed opinion. We do not clean, remediate, manage claims, or receive income from cleaning, remediation or referral arrangements, and we do not recommend cleaners. If a car will be cleaned, testing first shows whether residue is present and where. Verification sampling afterwards reports results against the criterion named in the report.
Yes, if you want evidence of what cleaning achieved. Testing before cleaning records the vehicle's condition and shows which surfaces returned the highest results. Verification sampling after decontamination reports whether results are below the named criterion. WA Health recommends that the company testing a property is different from the one remediating it. Test Australia does not clean vehicles.
There is no fixed time. Methamphetamine can persist on surfaces for a long time, particularly on porous materials and uncleaned areas. A car cabin has a lot of fabric, including the headliner, seats and carpet. Ordinary cleaning may move residue without removing it, and residue cannot be seen or reliably smelt. Testing shows what is there now.
It is the cleaning, and where needed the removal or replacement of materials, done to reduce methamphetamine residue in a vehicle. Test Australia does not decontaminate vehicles. Our report states the results against the named criterion and the verification sampling that would be needed after decontamination. Decisions about cleaning, replacement and cost are for the remediator, insurer and owner.
Test Australia collects wipe samples from the cabin to NIOSH Method 9111, and an independent NATA-accredited laboratory analyses them by LC-MS/MS. The sampling plan is designed for the vehicle and the question being asked, and a caravan or motorhome is sampled like a small home. Chain-of-custody records go with the samples. Test Australia itself is not NATA-accredited.
You can screen it. A DIY meth kit is a presumptive lateral-flow screen with a 0.5 µg/100 cm² cut-off, read at 5 minutes. It shows whether methamphetamine may exceed that cut-off, but does not measure a concentration and is not laboratory analysis. One kit tests one surface. Follow a positive or uncertain screen with laboratory testing.
No standard or limit is written specifically for vehicles. Remediation work generally refers to IICRC S900, published in 2025, and the national Clandestine Drug Laboratory Remediation Guidelines (2011). Test Australia does not clean. It tests after the work and reports the results against the criterion named in the report.

Ready to arrange testing, or want to discuss your specific situation? Contact us to request a fee proposal or arrange an assessment. We do not provide free telephone consultations — all advice is grounded in site assessment and laboratory data.

Reviewed for Test Australia by Dan Neil, Principal Occupational Hygienist and Chartered Chemist (MRACI CChem). Dan has 25 years in industrial chemistry and forensic science experience and has been a member of the Australian Institute of Occupational Hygienists for more than 13 years. Last reviewed .

Concerned About Vehicle Contamination?

Whether you are buying a used car, managing a fleet or dealing with a claim, request a fee proposal.