{"id":16793,"date":"2026-06-20T12:00:42","date_gmt":"2026-06-20T10:00:42","guid":{"rendered":"https:\/\/aromexperten.se\/what-is-cbd-oil-a-complete-guide-to-cbd-and-cannabidiol\/"},"modified":"2026-06-20T12:00:42","modified_gmt":"2026-06-20T10:00:42","slug":"what-is-cbd-oil-a-complete-guide-to-cbd-and-cannabidiol","status":"publish","type":"post","link":"https:\/\/aromexperten.se\/en\/what-is-cbd-oil-a-complete-guide-to-cbd-and-cannabidiol\/","title":{"rendered":"What is CBD Oil? A Complete Guide to CBD and Cannabidiol"},"content":{"rendered":"
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CBD Certificates of Analysis<\/strong>, often called COAs, show what a laboratory has examined in a specific sample. The document reports cannabinoids, analysis method, reporting limits, and the identity of the sample. The crucial part is to check which sample the certificate applies to, as a raw material analysis and an analysis of the finished product answer different questions. <\/p>\n

This guide goes through the most important parts of a COA: how to read CBD content, THC results, LOD, LOQ, batch numbers, and analysis dates without confusing laboratory data with product claims. We use our own published certificate as a consistent example. <\/p>\n<\/div>\n

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\n COA<\/span>
\n Certificate of Analysis<\/span>
\n Analysis results for an identified sample<\/span>\n <\/div>\n
\n LOD<\/span>
\n Limit of Detection<\/span>
\n Lowest level the substance can be detected<\/span>\n <\/div>\n
\n LOQ<\/span>
\n Limit of Quantification<\/span>
\n Lowest level a quantity can be specified<\/span>\n <\/div>\n
\n Sample<\/span>
\n Most important check<\/span>
\n Does it apply to the raw material or the final product?<\/span>\n <\/div>\n<\/div>\n
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Contents:<\/strong>
\nWhat is a COA?<\/a> \u00b7
\nSample identity<\/a> \u00b7
\nBatch number<\/a> \u00b7
\nCannabinoid profile<\/a> \u00b7
\nUnits<\/a> \u00b7
\nLOD and LOQ<\/a> \u00b7
\nTHC result<\/a> \u00b7
\nAnalysis method<\/a> \u00b7
\nRaw material or final product<\/a> \u00b7
\nOther analyses<\/a> \u00b7
\nA real certificate<\/a> \u00b7
\nChecklist<\/a> \u00b7
\nFrequently asked questions<\/a><\/p>\n<\/div>\n<\/div>\n

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What is a CBD Certificate of Analysis?<\/h2>\n<\/div>\n
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COA stands for Certificate of Analysis<\/em>. In Swedish, the term “analyscertifikat” is often used when the sample concerns a CBD raw material or product. <\/p>\n

The laboratory reports the results from an identified sample: which cannabinoids have been measured and in what quantities, along with the analysis date, method, sample number, and reporting limits.<\/p>\n

A COA only shows the parameters the laboratory has actually examined. A cannabinoid analysis is therefore not proof that the product has also been tested for heavy metals, microorganisms, or pesticide residues. <\/p>\n<\/div>\n

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In short:<\/strong> a COA describes the laboratory results for the sample that the document identifies, not automatically all properties of the product.<\/p>\n<\/div>\n<\/div>\n

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Verify the Sample Identity<\/h2>\n<\/div>\n
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Start with the sample’s identity. Look for the sample name, product name, the laboratory’s sample number, and any batch code. Together, this information shows which material the laboratory actually received and analyzed. <\/p>\n

Then compare the certificate’s details with the label and the product page. If the certificate specifies “CBD isolate” while the product page describes a broad-spectrum extract, the document does not match the product, and therefore says nothing about what you are buying. <\/p>\n

Also check who submitted the sample. A laboratory analyzes the material provided, but the analysis does not confirm the entire production chain or that subsequent production batches have the same composition. <\/p>\n<\/div>\n<\/div>\n

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What Do Batch Numbers and Sample Numbers Show?<\/h2>\n<\/div>\n
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A batch number identifies a specific production run and allows the manufacturer to link raw material, production, and documentation to the same series of products.<\/p>\n

The laboratory often creates its own sample number. This identifies the analysis task in the laboratory’s system but does not replace the manufacturer’s batch number. <\/p>\n

For good traceability, the certificate and the product label should share a clear identifier. If the link is missing, it becomes harder to determine if the analysis applies to the goods in stock. <\/p>\n

Is an Old COA Still Relevant?<\/h3>\n

An older certificate describes a previous raw material delivery or production run. It does not verify a new batch. The seller should therefore clearly state which certificate belongs to the current raw material or product. <\/p>\n<\/div>\n<\/div>\n

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How to Read the Cannabinoid Profile<\/h2>\n<\/div>\n
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The cannabinoid profile lists the substances the laboratory has searched for. Common analytes are CBD, CBDA, CBDV, CBG, CBGA, CBN, delta-9-THC, delta-8-THC, and THCA. <\/p>\n

Read each line separately. The result may be shown as a numerical value, “not detected”, “under LOD”, or “under LOQ”. Then read the laboratory’s method notes to understand what the designations mean in that specific document. <\/p>\n

The profile also reveals if the product designation is correct. A CBD isolate normally shows a very high CBD content and virtually no other cannabinoids. A broad-spectrum or full-spectrum extract, on the other hand, should show several cannabinoids in measurable quantities. If everything except CBD is below the reporting limit, the profile resembles an isolate, regardless of what the label says. <\/p>\n

A 2024 study analyzed 202 commercial CBD products and reported discrepancies between product category, declared content, and measured composition. The laboratory result therefore carries more weight than the product name. <\/p>\n

Read the study on labeling and laboratory content in commercial CBD products<\/a><\/p>\n<\/div>\n<\/div>\n

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Understanding Percentage by Weight, mg\/g, and mg\/ml<\/h2>\n<\/div>\n
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Laboratories report cannabinoids in several different units. Read both the number and the unit before comparing two results. <\/p>\n

Percentage by Weight<\/h3>\n

Weight percentage, often written as % w\/w, describes how much of the sample’s weight consists of the substance. A result of 80% CBD in a distillate does not mean that a finished oil contains 80% CBD, as the distillate is diluted with a carrier oil. <\/p>\n

Milligrams per Gram<\/h3>\n

Mg\/g indicates the amount of substance per gram of sample. The unit is often used for solid raw materials, extracts, and concentrates. <\/p>\n

Milligrams per Milliliter<\/h3>\n

Mg\/ml describes the amount of substance per milliliter of liquid and is relevant for finished oil blends. It is not always possible to convert directly between weight percentage and mg\/ml without information on the density of the mixture. <\/p>\n<\/div>\n

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Important:<\/strong> do not compare a raw material analysis in percentage by weight with a product declaration in milligrams per bottle as if the figures describe the same thing.<\/p>\n<\/div>\n<\/div>\n

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What Do LOD and LOQ Mean?<\/h2>\n<\/div>\n
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LOD means limit of detection<\/em>. It describes the lowest level at which the laboratory can distinguish the substance’s signal from background noise. <\/p>\n

LOQ means limit of quantification<\/em>. It describes the lowest level at which the laboratory can specify a quantity with sufficient precision. <\/p>\n

If a result is below LOD, the laboratory cannot detect the substance with the current method. If it is below LOQ, a signal may exist, but below the level where a reliable quantity can be specified. <\/p>\n<\/div>\n

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Below LOQ does not automatically mean absolute zero.<\/strong> The result must always be read together with the laboratory’s reporting limit.<\/p>\n<\/div>\n

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Read Eurachem’s guide to analytical method validation<\/a><\/p>\n<\/div>\n<\/div>\n

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How to Interpret the THC Result<\/h2>\n<\/div>\n
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First, check which form of THC the laboratory has analyzed. A certificate may report delta-9-THC, delta-8-THC, THCA, and total THC on separate lines. <\/p>\n

Then compare the result with the reporting limit. “Under LOQ” and “not detected” do not mean the same thing as a guaranteed zero content, and it is therefore better to reproduce the laboratory’s results exactly. <\/p>\n<\/div>\n

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Example of exact phrasing:<\/strong> “Delta-9-THC, delta-8-THC, and total THC were reported below the laboratory’s quantification limit of 0.05 weight percentage in the analyzed sample.”<\/p>\n<\/div>\n

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A raw material result should not be transferred to a finished product without a separate analysis or relevant manufacturing documentation.<\/p>\n

For current regulatory information, see the Swedish Medical Products Agency’s information on cannabidiol<\/a>, and our guide on CBD oil and Swedish legislation<\/a>.<\/p>\n<\/div>\n<\/div>\n

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Check the Analysis Method<\/h2>\n<\/div>\n
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The analysis method determines which substances the laboratory can separate and measure. For cannabinoids, liquid chromatography methods such as HPLC or UPLC are most commonly used. <\/p>\n

AOAC International has approved an LC-DAD method for the analysis of cannabinoids in cannabis plant material, concentrates, and oils. A validated method must demonstrate sufficient selectivity, precision, and accuracy for its area of use. <\/p>\n

Laboratories may use different sample preparation, instruments, reference standards, and reporting limits. Results from two laboratories can therefore differ even when they analyze similar materials. <\/p>\n

Read more about AOAC’s official cannabinoid method for hemp<\/a><\/p>\n<\/div>\n<\/div>\n

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Does the certificate apply to the raw material or the final product?<\/h2>\n<\/div>\n
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This question determines how much the certificate can actually substantiate.<\/p>\n

A raw material COA describes the material before blending or manufacturing. A final product certificate describes the sample taken from the finished product. <\/p>\n

A raw material analysis can verify the purity and cannabinoid profile of the extract. However, it does not confirm that a finished bottle contains exactly 1,000, 2,500, or 5,000 mg of CBD, as that figure depends on how the raw material has been weighed and mixed. <\/p>\n

To verify the content of the final product, the laboratory needs to analyze the pre-mixed oil. Alternatively, the manufacturer needs to be able to demonstrate a controlled manufacturing process with correct weighing-in and homogeneous mixing. <\/p>\n

The difference is central because research has repeatedly shown discrepancies between the label and the measured content in commercial CBD products.<\/p>\n

Read the systematic review on the labeling of cannabinoid products<\/a><\/p>\n<\/div>\n<\/div>\n

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What Other Analyses Might Be Needed?<\/h2>\n<\/div>\n
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A cannabinoid profile only describes cannabinoids. A broader quality program requires several separate analyses: <\/p>\n