Lab & science
Lab reports, cannabinoids, terpenes and what the numbers mean.
Showing material for the country you picked in the header and for every country.
Lab & science articles
How Long Does THC Stay in Your System? Urine, Blood, Saliva, Hair
Verdex Editorial Team · Oct 7, 2026 · 6 min read
Edibles Dosing: Why Onset Takes Longer and How Labeling Works
Verdex Editorial Team · Oct 7, 2026 · 6 min read
How to Read a Cannabis Lab Report (COA): A Line-by-Line Guide
Verdex Editorial Team · Oct 7, 2026 · 6 min read
Nothing on this page for the country you picked — try the next page, or
About this topic
Numbers on a package are only useful if you know what they measure. This category explains lab reports, potency, terpenes and how long effects and traces last, and it says what kind of study a claim comes from: mouse, test tube, or human trial. The terpene guide, for example, states outright that its strongest human evidence is one small 2024 trial.
How to read a lab report walks a COA line by line, including total THC and non-detects. Terpenes explained separates chemistry from menu marketing. Edibles dosing answers why eaten THC takes longer to work, and how long THC stays in your system compares urine, blood, saliva and hair windows.
For the labels themselves, indica vs sativa vs hybrid asks what they tell you. Effect pages such as sleepy apply the same test to each feeling.