Reading a Terpene Report: Small Details, Better Questions
Start with the sample
A terpene report can look busy at first glance. Begin with the product name, batch or lot number, laboratory, and testing date.
A certificate of analysis, often shortened to COA, records laboratory results for a tested sample. Product and sample details help you determine whether the report belongs with the item you are reading about. A terpene section may be included alongside other testing information. [1]
Read the units before the numbers
Terpene concentrations may be presented as percentages or in milligrams per gram. When both refer to the same mass basis, 1% equals 10 milligrams per gram. For example, 0.5% equals 5 milligrams per gram.
Check what each value refers to. An individual compound’s concentration and the sum of several measured terpenes answer different questions. A chart showing each compound’s share of the terpene mixture also uses a different denominator from a percentage of the entire product.
If the report does not make the basis clear, ask the laboratory or product provider for an explanation.
Read beyond the largest result
Notice which compounds the laboratory measured and how it presents very small results. Look for a key explaining terms such as “not detected” or “below the reporting limit.” Those terms need to be read with the method’s limits in mind.
A terpene panel is also only one part of product information. The New Jersey Cannabis Regulatory Commission’s COA guide describes separate sections for cannabinoid results and contaminant testing. [1]
Carry a few questions with you
Ask whether the report matches the batch, what units it uses, which compounds were included, and where to find the laboratory’s definitions.
Treat the report as information to interpret alongside the complete product label and intended use. A number is most useful when you understand what was measured.
You can learn this one line at a time. Start with the sample details, follow the units, and keep asking clear questions.
Keep exploring: Look up the terpene names on your report.
Source
New Jersey Cannabis Regulatory Commission — How to Read a Certificate of Analysis. Used for general report-reading concepts; testing requirements vary by jurisdiction and product.