What Is a Personal Reference Period?
Understanding one of DriveClear's unique features.
People often ask: what is a Personal Reference Period?
It is a DriveClear concept. It is a continuously updated personal timeline that helps medicinal cannabis patients keep an accurate picture of their own treatment history — specifically, how much time has passed since their most recently recorded intake.
It is a record-keeping reference. Nothing more, and nothing less.
Why was it created?
Because routine treatment is easy to forget. Patients frequently cannot recall:
- when they last took their medicine
- which product they used
- how long it has been since then
The Personal Reference Period replaces that guesswork with a clear personal timeline based on the information you recorded.
Why is it “Personal”?
Because it belongs to you and reflects only your treatment. Every patient differs in their:
- prescribed products
- doses
- treatment plans
- individual responses
There is no shared or standard reference period. Your recorded history is unique to you, which is exactly why the timeline is personal rather than general.
What it does
- Every new intake you record automatically updates your Personal Reference Period.
- The timeline is always based on your own recorded information.
- It stays current without you needing to calculate anything.
What it does NOT do
It is important to be precise here. The Personal Reference Period is not:
- legal advice
- medical advice
- permission to drive
- a prediction of roadside testing
- a guarantee of impairment or non-impairment
The Personal Reference Period reflects recorded time only. It says nothing about how any medicine is affecting you, and nothing about drug driving law in any part of the UK.
How DriveClear helps
DriveClear maintains this timeline for you. You record an intake; the app keeps the reference period accurate from that point on, so your history stays consistent even when your routine is not.
- The Personal Reference Period is a DriveClear record-keeping concept.
- It measures time since your most recently recorded intake.
- It updates automatically with every intake you record.
- It is personal because every patient's treatment differs.
- It is not advice, permission, prediction or any assessment of impairment.
Continue learning
A calm, plain-English introduction to the driving questions medical cannabis patients ask in the UK, and where to read more.
Memory is unreliable over months. Here is what an accurate personal treatment record actually gives you.
One of the most searched questions by patients, answered honestly: the factors that make every person's circumstances different.
What roadside drug testing is, how the legal framework can differ across the UK, and what DriveClear can and cannot tell you.