OKCTL offers a complete portfolio of testing services primarily focused on the cannabis industry. Our brand new state-of-the-art laboratory and highly qualified team enables us to complete a wide variety of testing services within a short timeline without sacrificing quality. Test results are typically available within 24-48 hours, if same day service is needed please contact us.

OKCTL has developed strict operating procedures starting at sample collection and ending when the sample has expired and is destroyed.


  • Moisture Testing
  • Foreign Materials Testing
  • Potency Testing
  • Mycotoxin Testing
  • Terpene ProfilingPlant Sexing
  • Residual Solvents and Processing Chemicals TestingHomogeneity Testing
  • Pesticide Screening
  • Microbial Impurities Testing

Sampling Procedures

Sample Size for Testing.
How much should I supply for testing?

Due to recent changes to OMMA rules and regulations, we will be required to receive both a PRIMARY and RESERVE sample on all Full Compliance Tests starting on Friday, December 11, 2020. 

This change will impact our required sample weights, as noted in the chart below. It is important to ensure that all samples are homogenized thoroughly in accordance with OMMA regulations. All products must be separated into two (2) equal samples labeled PRIMARY and RESERVE prior to drop off.

As always, we are here to answer any questions or concerns. Please give us a call during laboratory hours and we will be happy to help!

FLOWER (cured) 5 grams 5 grams 
FLOWER (fresh frozen) 5 grams 5 grams 
PRE-ROLLS (all) 5 grams 5 grams 
CONCENTRATES 3 grams 3 grams 
KIEF / HASH 4 grams 4 grams 
TINCTURES 5 grams 5 grams 
TOPICALS 1 units (as sold) 1 units (as sold) 
EDIBLES 4 servings (units/pieces) 4 servings (units/pieces) 
SUPPOSITORIES 4 units (as sold) 4 units (as sold) 


Sample Collection

Cannabis plants have distinct growth patterns which influence how cannabinoids are distributed throughout the flowers. Flowers located on the primary stalk at the very top of the plant will yield the highest numbers, while flowers located on lateral stalks down towards the base of the plant will have the lowest numbers.

Because of this, we recommend specific methods of collection to ensure the most accurate profile results. Collect small bits of flower randomly from all portion of the plant – many small buds totaling 1 gram per test will be potentially more accurate than a single large bud.