Making Sense of Marijuana Laboratory Test Reports

On November 1st, 2020, the Arizona Department of Health Services (AZDHS) began requiring testing of Marijuana flower, concentrates, and infused products (e.g., edibles, beverages, topicals). The testing program adopted and refined a set of industry-standard testing practices, testing laboratory certification, testing protocols, and safety standards for both Adult Use and Medical programs.
Marijuana product test results can be overwhelming in their detail and complexity. This brief guide is meant to assist our wholesale dispensary customers and their customers & patients in making sense of these reports.

AZDHS Testing Requirements
Per Arizona Senate Bill 1494 (SB-1494), the following five (5) types of analysis must be
performed on all cannabis and cannabis infused products. These tests include:

AZDHS Testing Requirements

Per Arizona Senate Bill 1494 (SB-1494), the following five (5) types of analysis must be performed on all cannabis and cannabis infused products. These tests include:
⓵ Pesticides – Chemical compounds sometimes used in the cultivation of Marijuana Flower. Generally expunged from the plant during the final stages of cultivation.
⓶ Residual Solvents – Compounds, frequently a type of hydrocarbon such as highly-purified butane or propane, or CO2, or other solvents used to strip the trichomes (and their cannabinoids) from the Flower material being processed. Residual solvent is generally removed through a heating/vacuum process.
⓷ Heavy Metals – Elements found in soil and other growth mediums that can inadvertently be taken up by the plant where it remains.
⓸ Microbials – Mold and bacteria or toxic compounds they create can be present on cannabis products. The significant presence of these compounds may imply poor sanitation and/or handling practices. ⓹ Potency – Defined as the amount of Total THC (THCa+THC), and Total CBD (CBDa+CBD) present in the product.

Safety limits for each of these areas are established and only products that PASS all tests are considered legal for sale in Arizona. Examples of annotated testing panels for each area are provided further in this document. For additional information including updated testing rules, certified laboratories, etc., please refer to

How Halo Infusions Tests Infused Products

Halo Infusions tests our Topical and Edible Products by first testing the Marijuana Source Material for ⓵ pesticides, ⓶ residual solvents, and ⓷ heavy metals. Performing these tests on the Flower or Extract-based Marijuana Source Materials used for infusions eliminates the need to perform these tests on the Final Product. Once a product has completed manufacturing (Final Product), testing for ⓸ Microbials, and ⓹ THC & CBD Potency are performed.*

Testing Summary Page

testing summary cover sheetTo simplify intake processing of Halo Infusions’ products by our wholesale Dispensary customers, Halo Infusions provides a Summary Cover Sheet with all product batches at delivery. The delivery form includes all testing categories and their test status.
This presence of this form represents that Halo Infusions warranties this product batch to fully conform to all AZ Marijuana Testing Requirements and is therefore suitable for sale.
Wholesale Dispensary staff and Patients/Adult Use Customers may also enter the product’s Batch Number directly into our testing
database at, to obtain complete testing reports at Point of Sale (POS) stations, or from any Internet-connected device.

Testing Flow

Testing Flow for Marijuana and infused productsFigure 2 illustrates the testing process for Marijuana and Marijuana-infused products.
The top-most row shows Flower products, while the second row shows Concentrates & Cartridges. The final two rows (Row 3 and 4) show the testing workflow for infused products (using either Extract or Flower).

How to Read Test Results

Test results are typically two or more pages in length and include panels which provide both summary and detailed information. Common terminology includes:
Crude – Raw, or unrefined, as in unwinterized Crude Cannabis (Marijuana) Oil.
Total THC – Calculated total amount of THC present (THCa x .877 + Δ9 THC)+
Total CBD – Calculated total amount of CBD present (CBDa x .877 + Δ9 THC)+
Total Cannabinoids – Total percentage presence of all cannabinoids tested.
LOQ – Limit of Quantitation. Defines the limit to which the equipment can detect a compound’s presence.
<LOQ – Indicates the compound was detected but the amount is too small to characterize.
ND – None Detected. The compound was not found in testing.
NR – Not Reported. The compound was not found in testing.
Analyte – A substance whose chemical constituents are being identified and measured.
Batch # – The principal identifier for the product tested. The Batch # allows for seed-to-sale tracking of the Marijuana product tested.
PPM – Parts per Million. Defines the concentration of the compound tested per a unit volume. PPM is typically used as a measure of the presence of an undesirable substance and the limits at which it becomes toxic.
mg/g – Milligrams per gram. Typically references the amount of a compound (in milligrams) detected per gram of sample.
mg/unit – Milligrams per unit. Same as above, but calculated as total in product package.
Resin – A concentrated form of the active ingredients in Marijuana, especially cannabinoids & terpenes. Unusually produced through an extraction process that includes one or more of pressure, heat, and/or solvents.
Pathogen – A (potentially) infectious organism that causes disease.

Source Material Test Panels

source material test panelsSource Material Testing: Pesticides, Solvents, Heavy Metals

As stated previously, Infused products like edibles, beverages, tinctures and topicals may all have their initial Marijuana Source Material tested for Pesticides, Residual Solvents, and Heavy Metals.
Final Products then only require testing of Microbials and Potency. Figure 3 illustrates the testing panels for Source Material used for infusion in manufacturing edible products.

Final Product Test Panels

final product test panelsFinal Product Testing: Potency & Microbials

Final products are always tested for Microbials at the Final Product packaging stage to ensure safety. Cannabinoid Potency analyses are performed to meet AZDHS requirements for THC and CBD product label claims and to ensure Medical and Adult Use consumption rules are followed.
Figure 5 shows an annotated Final Product Test Panel Summary and detailed Potency information.

Potency Test Panel

potency test panel final productThe Potency Test Panel is typically the first panel displayed in test results. It includes information on Cannabinoids detected, most notably THC and CBD. Other Cannabinoids and their acidic pre-cursors (THCa, CBDa, CBGa, etc.) are also usually tested and reported. Cannabinoids are the principal active compounds found in Marijuana, and are largely regarded as responsible for the majority of its effects, including euphoria and pain relief, or having antibiotic, anticonvulsant, or anti-inflammatory properties.
Figure 6 illustrates an annotated Test Panel for Potency for a Final Product (edible).
* Concentrates and cartridges are the only products that require testing for solvents, as solvents are only used for extraction purposes.
+ The value .877 represents the estimated conversion rate of THCa and CBDa to their activated forms.

Terpene Test Panel

Terpene Test PanelThe second panel usually found in Flower, Concentrate and Cartridge reports is a Terpene Test Panel. This panel includes any test data reported for terpenes. Terpenes are important aromatic compounds originating from the same trichome sources as cannabinoids. Terpenes directly impact the taste and smell of smoked Marijuana and are believed to be a key component of the Entourage Effect. Testing for Terpenes is NOT a requirement of the AZDHS. Terpene testing is usually done when a cultivator or manufacturer wants to make products that incorporate terpenes. Figure 7 provides an annotated Test Panel for Terpenes.

Microbial Test Panel

Testing panels for microbials halo infusionsMicrobials include bacteria, fungi, viruses and other single or multi-celled parasitic organisms. Testing of microbials in Marijuana Products includes E. Coli and Salmonella bacteria, and Mycotoxins, (Aflatoxins and Ochratoxins). E. Coli and Salmonella are bacteria found in the environment, foods, and intestines of people and animals. Most types of E. Coli are harmless or cause relatively brief symptoms. A few strains of E. Coli and Salmonella can be pathogenic.
A mycotoxin is a toxic secondary metabolite produced by organisms of kingdom Fungi and is capable of causing disease and death in both humans and other animals. The term ‘mycotoxin’ is usually reserved for the toxic chemical products produced by fungi that readily colonize crops. Figure 8 shows an annotated Test Panel for Microbials.

Residual Solvents Test Panel

Test panel for residual solventsMost concentrates are processed using a solvent such as CO2, butane, propane, other
hydrocarbons, water, or with our products, ethanol to extract the cannabinoids and terpenes
from the plant material. Figure 9 illustrates an annotated Test Panel for Residual Solvents.
In some cases, the solvent and impurities from the solvent remain in the extracted material.
These are called residual solvents and are the byproducts of the extraction process. Safety
standards require that the presence of residual solvents fall below designated limits to be
eligible for sale. Some concentrate products can be remediated by additional processing.

Pesticides Test Panel

Pesticides are man-made complex compounds, used to repel or eradicate insects, rodents and other pests. While many pesticides become inert after application, some persist on plants and in their soil. Dozens of common pesticides that may be used by cultivators are tested and any quantities above threshold are reported. Only safe products are permitted for sale. Figure 10 provides an example of an annotated Test Panel for Pesticides.

Heavy Metals Test Panel

Heavy metals are metallic chemical elements that have a relatively high density and can be
toxic or poisonous even at low concentrations. Heavy metals occur in cannabis products
when the plant uptakes these elements while in cultivation, or when heavy metal-containing
nutrients are used.
test panel for pesticidesFigure 11  provides an example of an annotated Test Panel for Heavy Metals.

Halo Infusions Testing

All of our test results can be found conveniently at our website All that is required is to enter the Batch ID into the provided field and Voila! You will find the results related to your product with easy to navigate buttons that detail which results you are reviewing. There is also a zip file download for the ease of capturing all related results with one click of a button.

When reading our Certificates of Analysis (COAs), notice there are typically 2-3 CoAs in our testing packet. In this you will find the Final Product analysis (Potency and Microbials), the Source Material analysis (Pesticides, Residual Solvents and Heavy Metals) and when applicable, the Intermediary dosing material analysis (Potency and Microbials, to ensure dosing accuracy and sanitation control through processing).

Additional Product COAs

When products do not pass muster for Potency (+/- 20% of the label claims) with results from the lab, the state has allowed for testing at two other labs. This allows for the potential
uncertainty from the first lab to not hinder the ability to sell products that may otherwise be
dosed correctly.
In these situations you will find that we list two additional COAs in our testing packet, Primary
Retest and Secondary Retest. We label the product with one of the two passing retest
potency results; this is typically the potency result closest to the target on our label.

For More Information

For more information on product testing and reporting, please contact our Customer Care team at


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