Toxicology Development Plan

Version 4 of the Toxicology Development Plan commenced in April 2025. The plan focuses on three main areas:

• Introduction of a new drugs panel – Panel B.
• QToF instrument – method development, validation and implementation.
• Alcohol instrumentation – replacement of end-of-life equipment

The development and validation work required to introduce the first new drugs panel (Panel B) continues as per schedule and remains on track for implementation in Q3.

The QToF instrumentation software updates required to complete the installation of the equipment prior to development work commencing are scheduled and almost complete, allowing the initial training dates to be timetabled. Work has started to re-schedule the development plan for the QToF.
Six-Month Timeline

The six-month timeline, agreed within the Drug Driving MOU, remains live with performance reported monthly via Operation Hitch.

The collective flexibility introduced via the stretch targets detailed within the timeline is used to support increased compliance from incident date to COPFS receipt, as detailed below. The dip in Section 4 performance in August was due to one late submission case.

PSoS performance has been consistent, with 95% of cases being submitted within the 28-day stretch target in Q2. The chart below illustrates the number of cases submitted by PSoS outwith the 28 days.

No new cases have been rejected with no analysis completed, with just the previously reported 2 x Section 4 cases having been rejected since the implementation of the six-month STL. This equates to less than 0.1% of the drug driving cases submitted over this time period.

As per the MoU a further two drug driving cases have undergone reduced analysis within Q2 due to late submission. This relates to around 0.2% of the drug driving cases submitted within Q2.