Mail-in testing is temporarily down while we expand and relocate the lab.

The Devil's Lettuce
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    • Chain of Custody Form
    • Sample Preperation
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    • Home
    • Get Started
      • Chain of Custody Form
      • Sample Preperation
      • Drop Off Locations
    • Pricing and Availability
    • Our Testing Services
      • Cannabinoid Profiling
      • Soil Testing
      • Plant Sap Analysis
    • Psychedelics Research
    • Store
    • Verified Craft Producers
    • Blogs and Resources
      • Cannabinoids
      • VPD
      • Edibles Calculator
      • Terpenes
      • Blog
    • Subscribe Now!
    • Other Services
      • Rosin Pressing
    • Contact
    • Lab results
    • Merchandise
    • Get Started here
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The Devil's Lettuce

Signed in as:

filler@godaddy.com

  • Home
  • Get Started
    • Chain of Custody Form
    • Sample Preperation
    • Drop Off Locations
  • Pricing and Availability
  • Our Testing Services
    • Cannabinoid Profiling
    • Soil Testing
    • Plant Sap Analysis
  • Psychedelics Research
  • Store
  • Verified Craft Producers
  • Blogs and Resources
    • Cannabinoids
    • VPD
    • Edibles Calculator
    • Terpenes
    • Blog
  • Subscribe Now!
  • Other Services
    • Rosin Pressing
  • Contact
  • Lab results
  • Merchandise
  • Get Started here
  • Get Started

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Preparing your sample for submission

Step 1


 

Step 1: Sample Preparation

Flower 

  • Provide a minimum of 2 grams of bud material.


Concentrates & Isolates

(Rosin, wax, shatter, budder, RSO, FECO, etc.)

  • Provide a minimum of 0.5 grams.


Tinctures

  • Provide a minimum of 3 mL for alcohol based or 3 grams for glycerin based.


Edibles

  • Please contact us directly for size requirements. Be sure to include the following with your sample:
    • Cannabinoid mg per serving
    • Serving size
    • Total number of servings per package


Things to Consider


  • Flower: Ensure that the flower sample you provide is representative of the entire plant or strain. The plant is not homogenous, and potency value varies between bud sites. 
    • For Maximum Potency Testing: Submit top colas or larger, denser buds, which typically hold the highest cannabinoid content.
    • For Best Representation: We recommend selecting random buds from different parts of the plant(s) to ensure a more accurate profile of your sample.

STEP 2

Complete Chain of Custody Form

  • Download, print, and fill out the form to include with your shipment


  • OR submit the form online for a more secure and discreet process

Online Form

Click Here

Download and Print form

COC Form (pdf)

Download

STEP 3(skip step if your dropping off)

Mail Your Samples

 

To ensure the safe and accurate arrival of your samples, please follow these packaging guidelines:

Primary Container

  • Use a reinforced container for flower samples to maintain the structure and integrity of the buds, especially if you would like photographs included in the Certificate of Analysis (CoA).


  • Odor-proof bags or lightly vacuum-sealed bags are recommended. Note: If vacuum sealing without a hard container, take care, as trichomes may adhere to the surface, potentially impacting test results.


  • For concentrates or tinctures in glass containers, secure lids with tape to prevent leakage during transit. 


  • Ensure all containers are properly labeled and clearly identify the contents.

Secondary Container

  • A box is recommended to provide extra protection during shipping; however, a padded envelope is sufficient if properly sealed.


  • (Skip this step if using the online form)Include the completed Chain of Custody (COC) form inside the package along with your samples. 


  • Ensure that all samples are properly labeled and that the package is secure to avoid damage during transit.

Payment Information


  • Upon receiving your online COC form or your sample at our laboratory, we will send you an invoice for the testing services.


  • Payment instructions and details will be provided with the invoice.


  • Please note that test results will not be processed or released until payment has been received and processed

Copyright © 2025 The Devil's Lettuce - All Rights Reserved.


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 We're currently making upgrades and securing a new space to build a bigger, better testing lab. Mail-in services are paused during this transition. Thanks for your patience and we’ll be back soon, better than before 

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