Cannabis Lab Analysis Standards Program (CLASP)
WSDA leads an interagency team with the Department of Health (DOH) and the Liquor and Cannabis Board (LCB) to develop laboratory quality standards to protect and inform cannabis consumers.
Cannabis
The Washington State Department of Agriculture (WSDA) provides specific services to the recreational cannabis industry. If you have questions about how the WSDA works with the cannabis industry, you can send us an email at cannabis@agr.wa.gov
Cannabis Laboratory Validation Approval Status
Cannabis Laboratories were required to submit validation study data for four testing parameters to ensure they came into compliance with the standards set forth in WAC 16-309 and WAC 16-310 by the deadline, January 1st 2025. Below is the status of each laboratories submissions. "Approved" means that a laboratory has submitted satisfactory data that has demonstrated their compliance with the updated standard. "Under Review" means that the laboratory submitted data for a given parameter, but still needs to correct some components to come into compliance. "Not Accredited" means that the laboratory was not accredited for that parameter and does not plan to be at this time. "Suspended" means a laboratory cannot conduct testing for that parameter. Laboratories that do not bring parameters into "approved" status may be at risk for suspension. This status table has been updated as of August 28, 2025.
| Cannabinoids | Heavy Metals | Pesticides | Residual Solvents | |
| Capitol Analysis | Approved | Approved | Approved | Approved |
| Confidence Analytics | Approved | Approved | Approved | Approved |
| Green Growers | Approved | Approved | Approved | Approved |
| Integrity Labs | Approved | Approved | Approved | Approved |
| Medicine Creek Analytics | Approved | Approved | Suspended | Approved |
| Treeline Analytics | Approved | Not Accredited | Suspended | Suspended |
WSDA leads an interagency team with the Department of Health (DOH) and the Liquor and Cannabis Board (LCB) to develop laboratory quality standards to protect and inform cannabis consumers.
Pesticides and Fertilizers
WSDA regulates the use of pesticides and fertilizers on cannabis this includes publishing a list of allowable pesticides for use on cannabis which is regularly updated. WSDA also provides compliance guidance for the use of chemigation and fertigation on cannabis crops.
Weights and Measures Standards and Inspections
All scales used for commercial transactions (including cannabis transactions) must meet strict accuracy and technical standards. Also, package labeling must properly disclose the package contents by weight or volume.
The WSDA Weights and Measures Program conducts unannounced inspections to verify that scales meet accuracy and technical standards.
Infused Edible Processor Inspections
Information on Soil Reimbursement for DDD & DDE
Okanagan County cannabis producers whose products test higher than 0.1 parts per million of DDE and or DDD may request reimbursement for soil purchases that reduce contamination levels. In order to get reimbursed for your soil purchases, you must obtain a Statewide Vendor Number, and fill out a Soil Remediation Reimbursement Request Form and an Invoice Voucher Form. You can email your completed forms to Cannabis@agr.wa.gov.
Recreational vs Medical Cannabis
Recreational Cannabis
Recreational cannabis use was authorized by Initiative 502, approved by state voters in 2012. It is regulated by the Washington State Liquor and Cannabis Board (LCB).
Medical Cannabis
Medical cannabis information is available from the Washington State Department of Health.
Recreational cannabis use was authorized by Initiative 502, approved by state voters in 2012. It is regulated by the Washington State Liquor and Cannabis Board (LCB).
Medical Cannabis
Medical cannabis information is available from the Washington State Department of Health.